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ML-tools for cloud formation in extraplanetary atmospheres	Closing date: 2025-10-10 Contact: Ruth-Sophie Taubner
This PhD position is part of a FWF funded project that aims to understand cloud formation in exoplanets and specifically the formation of molecular cluster as pre-coursers of cloud formation in the diversity of extrasolar planets. The project explores advanced neural network architectures, particularly Graph Neural Networks (GNNs) and generative models, to predict thermo-chemical properties of large molecular clusters. These data will be applied to support physical data interpretation of observations with CHEOPS, JWST, and other space missions, like PLATO, in the future.
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We seek excellent candidates with a strong background in natural sciences. Successful candidates must hold a Master's degree in physics, astrophysics or equivalent at the latest by the starting date of the position but preferably at the time of application. Previous experience on aspects of computational chemistry, machine learning and related fields, and a track record of team work will be beneficial for the selection, as will experience in scientific coding and scientific publishing. PhD Position Offer 2047 submitted on Wed Sep 03 15:40:41 CEST 2025

Senior Scientist in Computational Astrophysics	Closing date: 2025-10-15 Contact: Glenn van de Ven
The Department of Astrophysics at the University of Vienna is looking for a Senior Scientist to join the 'Dynamics of Stellar Systems' research group. The position is initially limited to 3 years with possibility to become permanent by mutual agreement. The starting date is as early as 1 November 2025 and no later than 1 October 2026.
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The 'Dynamics of Stellar Systems' research group (https://dynamics.univie.ac.at/), led by Prof. Glenn van de Ven, is part of the Department of Astrophysics (https://astro.univie.ac.at/en/) at the University of Vienna. The research group constructs detailed dynamical models of galaxies and stellar clusters to infer the distribution of luminous and dark matter as well as to uncover the formation history of these stellar systems. Our ideal candidate has a solid background in computational astrophysics, strong track record in software development, and keen interest in dynamics of stellar systems. A key task is to lead the development and support applications of our pioneering code for orbital modelling of stellar systems, publicly released under the name DYNAMITE (https://www.ascl.net/code/v/2684). Further information on the position, candidate qualifications, offers from the University of Vienna, necessary application materials and how to apply, see the announcement text: https://jobs.univie.ac.at/job-invite/4570/ (Job ID: 4570). Academic Job Offer 2046 submitted on Mon Sep 01 22:32:02 CEST 2025

ICCUB's Maria de Maeztu Postdoctoral positions and Fellowship	Closing date: 2025-11-30 Contact: Esther Pallares
The Institute of Cosmos Sciences of the University of Barcelona (ICCUB) invites applications for two postdoctoral positions and one ICCUB Postdoctoral Fellowship, offered under the framework of its Unit of Excellence Maria de Maeztu. All positions are funded for up to 3 years.
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The three scientific profiles are as follows: - Position in Beyond the standard models of cosmology and particle physics: https://icc.ub.edu/node/1177163 - Position in Gravitational wave physics: https://icc.ub.edu/node/1177161 - Position in Quantum Resources for Science and Technology: https://icc.ub.edu/node/1177162 These positions are part of a dynamic and interdisciplinary research environment at one of Europe?s leading centers in cosmology, astrophysics, and particle physics. The Institute of Cosmos Sciences (ICCUB) at the University of Barcelona, established in 2006, focuses on cosmology, astrophysics, particle physics, quantum physics, and nuclear physics. With over 70 scientists, 20 engineers, and 90 postdoctoral researchers and PhD students (35% international), ICCUB collaborates internationally on projects like Gaia, LHCb, Virgo, MAGIC, CTA, and DESI. It also has an Advanced Technology Unit supporting experimental research requiring cutting-edge technology. Requirements: Applicants must hold a PhD in Physics, Astrophysics, or a closely related field by the start date of the contract, approximately in October 2026. We are looking for motivated researchers with a strong track record and a collaborative spirit. Employment Terms: Duration: up to 3 years Start Date: Preferably by Fall 2026 (flexibility possible for parental or special circumstances) Salary: Maria de Maeztu Postdoctoral Positions: Approx. 36.360?/year (gross), including full social security and public healthcare coverage for the researcher, spouse or registered partner and children ICCUB Postdoctoral Fellowship: Approx. 42.900?/year (gross), including full social security and public healthcare coverage for the researcher, spouse or registered partner and children Research Support: Fellowship: ?8,000/year for travel and training Postdoctoral Positions: ?5,000/year for travel and training Access to ICCUB?s advanced computational infrastructure, training programs, and career development resources Equal Employment Opportunity Statement ICCUB offers and promotes a diverse and inclusive environment and welcomes applicants regardless of age, disability, gender, nationality, race, religion or sexual orientation (for additional information please see the Diversity, Equity and Inclusion Commission. Job seekers in need of a reasonable accommodation to complete the application process should call or email secretaria @ icc.ub.edu with their request. Application Process: To apply, please complete the application form and provide contact details for three referees. After submission, you will receive instructions to upload the following documents: Curriculum Vitae Cover Letter Research statement (max 4 pp) outlining research experience, interests, research plan and how the candidate?s profiles and research plan would fit with the scientific profile of the position(s) Publication List The contact of three Reference Letter writers (referees will be contacted directly) Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). Applications will only be considered once at least two reference letters have been received. Note: Applicants should select their preferred job offer. Note: For questions regarding the application process, please contact Esther Pallar�s at secretaria @ icc.ub.edu. Deadline Application deadline: November 30th, 2025 Review of applications will begin immediately after the deadline and will continue until all positions are filled. Selection process: The selection process consists of two phases: merit-based evaluation and an interview. 1. Merit-Based Evaluation The Selection Committee will verify and assess the merits documented by the applicants. The maximum score for this phase is 80 points, distributed across the following categories: Curriculum Vitae ? Maximum: 30 points Alignment with the Mar�a de Maeztu Challenge ? Maximum: 30 points Reference Letters ? Maximum: 20 points 2. Interview: maximum 20 points Applicants who score at least 50 points in the merit-based evaluation will be invited to an interview. The interview will be conducted in English and may take place online via a video conferencing platform. Funding: These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence Mar�a de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033. The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge. Academic Job Offer 2045 submitted on Mon Sep 01 12:54:54 CEST 2025

Networks Systems Engineer	Closing date: 2025-09-24 Contact: Heather or Nasrin
An exciting opportunity for an experienced Systems Engineer to join an international, multicultural organisation and contribute to the construction of computing infrastructure for two of the largest radio telescope arrays in the world. For more information and to apply, follow this link: https://recruitment.skao.int/vacancy/networks-systems-engineer-593322.html
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At the SKAO we are coordinating a global effort to deliver one of the largest science facilities on the planet. The SKAO telescopes will be next-generation instruments that will help to answer key questions in astrophysics, drive technological innovation and support human capital development. More than a dozen partner countries and over a thousand scientists and engineers around the world are already on board, making the SKA project an international collaboration like no other, and one of the most ambitious science and engineering endeavours of the 21st century. Headquartered in the UK, with telescope sites in Australia and South Africa, the SKAO will be one observatory operating two telescopes, an endeavour spanning three continents. Multinational by design, in early 2021 the SKAO became an intergovernmental organisation, one of only a select handful of science infrastructures to do so worldwide. Our Global HQ is located near the buzzing city of Manchester at the historic Jodrell Bank Observatory, a UNESCO World Heritage site located in the Cheshire countryside. It is home to a rapidly expanding international team of more than a hundred, working in a highly collaborative and inclusive way, in coordination with SKAO teams in Australia and South Africa as part of a global astronomy and engineering community. Being part of Team SKA means contributing to something extraordinary: a uniquely exciting project to advance human knowledge that will last for decades. In return, we offer a diverse multicultural working environment, 30 days annual leave plus public holidays, a generous pension scheme, visa and support with relocation (if applicable), regular social events, a family-friendly environment and much more. Come and join us! The Role We are looking for an experienced Systems Engineer with knowledge of Networks to help deliver two next generation radio telescopes - one being built in South Africa, and one in Australia. This Network for each telescope will be used to transport the monitoring and control data, and science data, across the telescope. This person will be part of a cross-functional team responsible for delivering all the networking and compute hardware for both telescopes, and will work closely with project managers, systems engineers, technical specialists and suppliers. They will be responsible for the systems engineering activities pertaining to the procurement, installation and testing for a range of COTS-based clusters and storage systems. The role will report to the Head of Systems Engineering. This role is based at the SKAO Headquarters at Jodrell Bank, Cheshire, UK and is a three year fixed term contract. SKAO is committed to providing an inclusive and flexible working environment, meeting the requests of our Colleagues whilst also fulfilling the needs and objectives of the Observatory. There may be occasions where this role requires the post holder to work across different time zones and, in line with SKAO policy, flexible working hours will be supported in agreement with the line manager. Key Responsibilities, Accountabilities and Duties - Write technical specifications as input to suppliers. -Write Interface Control Documents (ICDs) between network equipment and other sub-systems and host buildings. -Manage configuration and baselines of technical documentation. -Capture and diagram architecture as needed to guide integration efforts. -Lead reviews to assess compliance of the submitted design against specifications, ICDs. -Define how the system will be verified. -Lead reviews of integration and test results. -Track verification of the as-delivered hardware. -Support configuration of as-built and product documentation. -Travel locally and internationally several times per year, as required. Mandatory Knowledge, Skills and Experience -University degree in Engineering, Telecommunications or Physics, or equivalent experience. -Substantial experience working as a systems engineer in complex, large-scale, technology systems. -Experience working as a systems engineer during the procurement, construction, and verification stages of a project. -Excellent organisational, time management and prioritising skills. -Good communication skills with the ability to present to international and other forums. -Ability to build good and flexible working relationships with internal and external stakeholders. Desirable Knowledge, Skills and Experience -Experience with design, scaling, integration, testing and maintenance of Networks. -Recognised systems engineering certification. -Familiar with Requirements Management Tools such as Jama. -Knowledge of project management. Equality Diversity and Inclusion Statement SKA Observatory recognises that our diversity is a strength. We aim to create a welcoming and inclusive environment where everyone feels they belong, and diverse perspectives and ideas thrive. As such, Equality, Diversity, and Inclusion are at the core of SKA Observatory?s agenda. Our aim is to recruit and retain the most talented individuals, regardless of gender, race, disability, age, sexual orientation, marital status, religion, nationality or background. Women have traditionally been under-represented in the fields of science and engineering; SKA Observatory welcomes and encourages female applicants. Where applicants with a disability need facilities or adjustments to enable them to participate in the recruitment process, these will be provided. SKA Observatory welcome all candidates, especially those from member countries. The ?How to Apply? information contained within the SKA Observatory recruitment portal provides more detail regarding our application and selection approach. Non-academic Job Offer 2044 submitted on Thu Aug 28 18:03:46 CEST 2025

Computing Systems Engineer	Closing date: 2025-09-24 Contact: Heather or Nasrin
An exciting opportunity for an experienced Systems Engineer to join an international, multicultural organisation and contribute to the construction of computing infrastructure for two of the largest radio telescope arrays in the world. For more information and to apply, follow this link: https://recruitment.skao.int/vacancy/computing-systems-engineer-587805.html
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At the SKAO we are coordinating a global effort to deliver one of the largest science facilities on the planet. The SKAO telescopes will be next-generation instruments that will help to answer key questions in astrophysics, drive technological innovation and support human capital development. More than a dozen partner countries and over a thousand scientists and engineers around the world are already on board, making the SKA project an international collaboration like no other, and one of the most ambitious science and engineering endeavours of the 21st century. Headquartered in the UK, with telescope sites in Australia and South Africa, the SKAO will be one observatory operating two telescopes, an endeavour spanning three continents. Multinational by design, in early 2021 the SKAO became an intergovernmental organisation, one of only a select handful of science infrastructures to do so worldwide. Our Global HQ is located near the buzzing city of Manchester at the historic Jodrell Bank Observatory, a UNESCO World Heritage site located in the Cheshire countryside. It is home to a rapidly expanding international team of more than a hundred, working in a highly collaborative and inclusive way, in coordination with SKAO teams in Australia and South Africa as part of a global astronomy and engineering community. Being part of Team SKA means contributing to something extraordinary: a uniquely exciting project to advance human knowledge that will last for decades. In return, we offer a diverse multicultural working environment, 30 days annual leave plus public holidays, a generous pension scheme, visa and support with relocation (if applicable), regular social events, a family-friendly environment and much more. Come and join us! The Role We are looking for an experienced Systems Engineer with knowledge of High Performance Computing Systems and/or cloud-native technologies to help deliver two next generation radio telescopes - one being built in South Africa, and one in Australia. This computing infrastructure will be used to monitor and control the telescopes, and process and package the science data for the end users. This person will be part of a cross-functional team responsible for delivering all the networking and compute hardware for both telescopes, and will work closely with project managers, systems engineers, technical specialists and suppliers. They will be responsible for the systems engineering activities pertaining to the procurement, installation and testing for a range of COTS-based clusters and storage systems. The role will report to the Head of Systems Engineering. This role is based at the SKAO Headquarters at Jodrell Bank, Cheshire, UK and is a three year fixed term contract. SKAO is committed to providing an inclusive and flexible working environment, meeting the requests of our Colleagues whilst also fulfilling the needs and objectives of the Observatory. There may be occasions where this role requires the post holder to work across different time zones and, in line with SKAO policy, flexible working hours will be supported in agreement with the line manager. Key Responsibilities, Accountabilities and Duties -Write technical specifications as input to suppliers. -Write Interface Control Documents (ICDs) between compute equipment and other sub-systems and host buildings. -Manage configuration and baselines of technical documentation. -Capture and diagram architecture as needed to guide integration efforts. -Lead reviews to assess compliance of the submitted design against specifications, ICDs. -Define how the system will be verified. -Lead reviews of integration and test results. -Track verification of the as-delivered hardware. -Support configuration of as-built and product documentation. -Travel locally and internationally several times per year, as required. Mandatory Knowledge, Skills and Experience -University degree in Engineering, Telecommunications or Physics, or equivalent experience. -Substantial experience working as a systems engineer in complex, large-scale, technology systems. -Experience working as a systems engineer during the procurement, construction, and verification stages of a project. -Excellent organisational, time management and prioritising skills. -Good communication skills with the ability to present to international and other forums. -Ability to build good and flexible working relationships with internal and external stakeholders. Desirable Knowledge, Skills and Experience -Experience with design, scaling, integration, testing and maintenance of High Performance Computing Systems. -Recognised systems engineering certification. -Familiar with Requirements Management Tools such as Jama. -Knowledge of project management. Equality Diversity and Inclusion Statement SKA Observatory recognises that our diversity is a strength. We aim to create a welcoming and inclusive environment where everyone feels they belong, and diverse perspectives and ideas thrive. As such, Equality, Diversity, and Inclusion are at the core of SKA Observatory?s agenda. Our aim is to recruit and retain the most talented individuals, regardless of gender, race, disability, age, sexual orientation, marital status, religion, nationality or background. Women have traditionally been under-represented in the fields of science and engineering; SKA Observatory welcomes and encourages female applicants. Where applicants with a disability need facilities or adjustments to enable them to participate in the recruitment process, these will be provided. SKA Observatory welcome all candidates, especially those from member countries. The ?How to Apply? information contained within the SKA Observatory recruitment portal provides more detail regarding our application and selection approach. Non-academic Job Offer 2043 submitted on Thu Aug 28 17:51:56 CEST 2025

POSTDOCTORAL POSITION (m/f/x) IN ASTROPHYSICS	Closing date: 2025-11-10 Contact: Prof. Dr. Yuri Kovalev
The Max Planck Institute for Radio Astronomy (MPIfR) is seeking a postdoctoral researcher to join the MuSES (Multi-messenger Studies of Extragalactic Super-colliders) project led by Prof. Yuri Kovalev and funded by the European Research Council (ERC Advanced Grant No. 101142396).
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MuSES (https://www.mpifr-bonn.mpg.de/muses) aims to explore the link between black holes, accretion disks, and their surrounding medium. Using advanced multi-messenger astrophysics, we seek to advance our understanding of black holes, relativistic outflows, cosmic ray production, and high-energy neutrino emission. PROJECT OBJECTIVES: 1. Observational studies of AGN jet geometry, collimation and acceleration: - Measurements of jet shapes from parsec-scale images. - Multi-year kinematics and model analysis to probe the acceleration of relativistic plasma in jets. - Developments of new automated algorithms for VLBI model-fitting, kinematics measurements and robustness assessment. 2. Probing the physical mechanism of neutrino production on the basis of multi-messenger blazar data: - Study of parsec-scale properties of neutrino-selected blazar candidates on the basis of regular VLBI observations of complete samples and neutrino-triggered follow-up experiments. - Reconstruction of physical conditions in AGN jets including properties of newly ejected relativistic ejections potentially associated with high-energy neutrino events. - Statistical and modeling analysis of radio-to-gamma-ray variations in relation to high-energy neutrino events to search for a possible connection between electromagnetic synchro-compton flares and neutrino arrival times and energies. To achieve these goals, the MuSES team will combine a range of radio-to-gamma-ray observations, particularly VLBI, and high-energy neutrino data. They will conduct multi-frequency polarization observations of blazars and AGNs with the Very Long Baseline Array (VLBA) within the ongoing MOJAVE project and other dedicated VLBA experiments at cm and mm wavelengths. We seek a researcher whose scientific interests align with one or more of these objectives. Experience in any of the following areas is desirable but not strictly required: radio interferometry techniques and VLBI, modern methods of electromagnetic or multi-messenger statistical data analysis, AGN jet simulations. Postdocs will have the opportunity to join the KM3NeT neutrino collaboration as full members and participate in neutrino telescope activities, including observations, data processing, and analysis as an integral part of the multi-messenger MuSES project. Additionally, the International Max Planck Research School for Astronomy and Astrophysics (IMPRS) offers opportunities for collaborative research with PhD students, including their supervision and teaching within the MuSES project. APPLICATION PROCESS: Interested and qualified individuals should submit the following by November 10, 2025: CV, list of publications, a research motivation letter to the MPIfR application portal https://jobs.b-ite.com/en/jobposting/88f04e3c43c6731c6b82420875ac220c71f132720/apply Applicants should also arrange for three letters of recommendation to be sent by referees to reference @ mpifr.de (subject line "MuSES: Candidate Name") by the indicated deadline. TERMS OF EMPLOYMENT: The initial appointment is for two (2) years with the possibility of extension upon review. The appointment is expected to start before October 2026. Remuneration is based on the German wage agreement for the public service (TV�D-Bund), level 13, which includes comprehensive healthcare coverage and other social benefits. The Max Planck Society is committed to increasing diversity in its workforce and encourages applications from individuals with disabilities. The society also seeks to increase female representation in underrepresented areas and strongly encourages women to apply. Academic Job Offer 2042 submitted on Wed Aug 27 10:59:58 CEST 2025

ESA Research Fellowships in Space Science (Postdoctoral Fellowships)	Closing date: 2025-09-22 Contact: Victoria Grinberg
We are pleased to announce the 2025 Call for Applications for the European Space Agency's Research Fellowships in Space Science. We expect to hire 5 to 6 postdoctoral fellows who will start their fellowship in fall 2026.
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ESA's postdoctoral Research Fellowship programme offers early-career researchers the possibility to carry out independent research in a variety of disciplines. Research Fellowships in Space Science offer the opportunity to contribute to ESA's endeavour to explore our Solar System and the Universe in the fields of heliophysics, planetary science, astrophysics, and fundamental physics. ESA Research Fellow contracts have a maximum duration of three years. Projects initially last two years and are frequently extended to a third year upon submission of a dedicated proposal. Research Fellowships in Space Science can be located at any of the following institutes: - European Space Astronomy Centre (ESAC) in Villafranca del Castillo near Madrid, Spain - European Space Research and Technology Centre (ESTEC) in Noordwijk, the Netherlands - ESA Office at Space Telescope Science Institute (STScI) in Baltimore, Maryland, USA Detailed information and a link to the application portal can be found on the fellowship webpage: https://www.cosmos.esa.int/fellowship Academic Job Offer 2041 submitted on Mon Aug 25 09:35:21 CEST 2025

Postdoctoral Fellowships at the Astronomical Institute of the Czech Academy of Sciences for 2026	Closing date: 2025-09-10 Contact: Lenka Cihakova
The Astronomical Institute (ASU, https://asu.cas.cz/en) is the leading astronomical research institute in the Czech Republic, located at the Ondrejov Observatory and in Prague.
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The Institute's main research activities are in the formation, evolution, dynamics and physical properties of galaxies, stars and star systems, research on the physics of compact objects including black holes and gravitational waves, research on the Sun, solar activity and its effects on processes on Earth and in interplanetary space, research on the Earth's immediate environment, the dynamics of natural and artificial bodies in the Solar System, and research on interplanetary matter and its interaction with the Earth's atmosphere. For 2026, ASU will consider research project proposals for postdoctoral fellowships in the fields of research conducted at the Institute. Applicants are required to get in touch with our staff members to discuss their support of the application and to discuss a research project and implementation plan (theory, observation, and data analysis are all welcome). A list of supervisors for hosting postdoctoral fellows in 2026 is provided below. Only applications that have been discussed with supervisors will be considered. Supervisors are expected to make their private shortlists and only recommend the final submission to the most promising applicants. Deadlines: 1. Get in touch with the selected supervisor before September 1st. Later enquiries may not be accepted. 2. Application Deadline is September 10, 2025, 12 PM (noon; in CEST/UTC+2 timezone). Submissions by email to sekretariat @ asu.cas.cz with the subject POSTDOC 2026. Required application parts (all in PDF): - cover sheet listing: full name, birth date, nationality, current position, the exact date of PhD defence, name of the host/supervisor at ASU, short motivation (half page maximum) - curriculum vitae - list of publications - summary of the most significant research results achieved to date and proposed research project (two pages maximum in total) - outline of the implementation plan for two years (4500 characters max) - recommendation letters (to be delivered separately) Applicants must arrange for a minimum of two recommendation letters to be sent directly to the same electronic address as above. The letters may be issued up to 9 months before the application deadline. Applications can be submitted slightly before finishing a PhD, in which case a statement from the current supervisor stating the planned date of the defence should be included. Applicants MUST then prove they have been awarded the PhD degree by September 26. The appointment is initially for one year; an extension for another year is expected upon satisfactory scientific performance. A necessary condition is to satisfy legal requirements for employment in the Czech Republic (EU member state). Salary will be based on the domestic level (cca 1700 EUR/month before taxes; health insurance included). There is a possibility of staff accommodation in Ondrejov; in Prague, private accommodation has to be arranged. The starting date of employment is expected to be January 1, 2026, but it is negotiable. Applications from applicants who are less than two years past obtaining their PhD will be considered separately. A shortlist will be preselected within 2 weeks of the application deadline, and listed applicants may be invited for an online interview. Once the evaluation process is completed, all applicants will be notified. Further information: o https://www.asu.cas.cz/en/departments for the list of working groups at the Institute o https://www.euraxess.cz/ for details about the research, employment and work conditions in the Czech Republic o http://www.numbeo.com/cost-of-living/comparison.jsp to compare the cost of living List of researchers and topics: - Jaroslav Dudik, Solar flares and eruptions, solar corona and transition region - Petr Kabath, Exoplanets and their atmospheres - Jana Kasparova, Solar flares in X-ray domain - Ondrej Zelenka, Gravitational waves from small mass ratio black hole binaries - Marek Skarka, Stellar variability - Jiri Svoboda, Multiwavelength observations of black holes across the mass scale - Artem Koval, Solar radio bursts - Petr Hellinger, Solar wind turbulence - Sona Ehlerova, Structures in the interstellar medium - Jan Palous, Feeding supermassive black holes - Richard Wunsch, Formation of stars and star clusters - Pavel Jachym, Evolution of galaxies in galaxy clusters - Michaela Kraus, Pulsations in blue supergiants and evolution of massive stars - Brankica Kubatova, Multi-wavelength analysis of massive hot stars and inhomogeneous stellar winds - Jiri Kubat, Radiative transfer and modelling of stellar atmospheres and winds - Michal Dovciak, X-ray astrophysics of black holes in AGN and XRBs - spectra, timing and polarization in theory and observations - Rhys Taylor, Arecibo studies of galaxy evolution - Olga Maryeva, Physical properties of evolved massive stars and their nebulae - Petr Skoda, Astroinformatics, advanced machine learning and usage of large language models and pre-trained transformers in astronomy - Michalis Kourniotis, Machine-learning classification of massive stars - Vladimir Karas, Acceleration and collimation processes in strong gravity Inquiries: Ms. Lenka Cihakova sekretariat @ asu.cas.cz Academic Job Offer 2040 submitted on Fri Aug 15 14:22:13 CEST 2025

Elevate Your PhD Experience with a Studentship at the European Southern Observatory (ESO)!	Closing date: 2025-10-20 Contact: Evelina Dietmann
Are you a PhD student looking to immerse yourself in one of the world's most dynamic scientific environments? The ESO Research Studentship Programme offers an unparalleled opportunity to join the vibrant community of one of the leading observatories on the planet for up to two years.
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Why ESO? ESO is Europe?s premier intergovernmental astronomy organisation, home to approximately 110 staff astronomers, 40 Fellows, and 40 PhD students. Our team conducts cutting-edge research across a broad range of fields, from exoplanets to cosmology, in a collaborative and stimulating setting that?s hard to match. Who Can Apply? We welcome applications from students enrolled in PhD programmes in astronomy or related scientific fields. As an ESO student, you will work on your doctoral project under the guidance of your home university supervisor while benefiting from the co-supervision of an ESO staff astronomer. You will spend a minimum of six months in Chile or one year in Germany, with a maximum stay of two years. Positions are available at ESO?s headquarters in Garching, near Munich (Germany) and in Santiago (Chile), with special opportunities for students from Chilean universities. Ready to Apply? If you are eager to enhance your PhD journey with an extended stay at ESO, visit ESO Studentship Employment Conditions (https://www.eso.org/public/jobs/conditions/students/) for details on employment conditions and benefits. Apply online at ESO Recruitment https://recruitment.eso.org/ Deadline: 20 October 2025. Applications will be reviewed as soon as the deadline passes. PhD Position Offer 2039 submitted on Thu Aug 14 14:26:40 CEST 2025

Data Validation Scientist	Closing date: 2025-09-21 Contact: Dr Giorgia Busso
Fixed-term: The funds for this post are available until 31 October 2027 in the first instance. This is an interesting opportunity for a data scientist to work at the Institute of Astronomy (IoA), University of Cambridge, as part of the Gaia and PLATO system development teams within the IoA Data Projects (CamCEAD) group.
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Gaia is a space observatory of the European Space Agency (ESA), launched in 2013, and with data releases in Dec 2026 and a final data release in 2030. Gaia's key objective is a detailed study of the Milky Way that is revealing our Galaxy's content, dynamics, current state and formation history. The IoA is responsible for the development and operation of the (spectro)-photometric processing system. PLATO is an ESA mission, launching end 2026, that will detect and characterise a significant sample of exoplanets around bright stars. Within the PLATO Consortium, the IoA team is responsible for the development and operation of the Exoplanet Analysis System, which will enable the detection of the signatures of exoplanets from high-precision photometric light curves of the host stars. The successful candidate will work initially within the Gaia development team, with likely later involvement in PLATO development. The main tasks will be in photometric light curve analysis and validation (Gaia and PLATO) and data analysis and development of novel scientific algorithms and applications in the areas of photometric and spectrophotometric processing (Gaia). The role will also involve liaising with the wider mission consortium teams and external science users; contributing to documentation; and collaborating in the Gaia and PLATO stellar and exoplanet related research programs to optimise interpretation and use of such mission data. The role will include opportunities to interact with the wider CamCEAD team, with potential to contribute machine learning expertise in the context of data systems ranging from ground-based spectroscopy (e.g. WEAVE) to medical imaging (i.e. SPACE/IMAXT). The successful candidate will have experience in astronomical data analysis activities, coupled with use of machine learning approaches to data validation, a good practical knowledge of scientific algorithm development and a PhD degree in a numerate discipline (preferably Astronomy, Physics, Computer Science, Computer Engineering or related field). Candidates are expected to be familiar with the acquisition and reduction of data from large-scale astronomical facilities or surveys and with the use of database and web-based systems. Knowledge of Python/Java and object-oriented programming is required, while knowledge of database systems would be advantageous. The ability to work as part of a team and have good communication skills is also required. The post-holder will be required to attend meetings both elsewhere in the UK and overseas hence possession of a valid passport is necessary. Salary will be on the Research Associate scale (grade 7, from �37, 694 - �46,049. Appointment at Research Associate level is dependent on having a PhD. Those who have submitted but not yet received their PhD will initially be appointed as a Research Assistant (Grade 5, Point 38 �34,610) moving to Research Associate (Grade 7) upon confirmation of your PhD award. How to Apply: To apply online for this vacancy and to view further information about the role, please visit : http://www.jobs.cam.ac.uk/job/52364 . Please ensure that you upload your Curriculum Vitae (CV), cover letter, publications list and research/ technical experience statement (three A4 pages maximum in 11pt font) in the Upload section of the online application. The names and email contact details of three referees are a necessary part of the submission. If short-listed for interview, you should advise your nominated referees that their references will be requested with a deadline of 15 October 2025. Closing date: Applications to be received on 21 September 2025 by 23:59 BST Applications will be reviewed after the closing date and short-listed candidates will be interviewed in the week 20 October 2025. The anticipated start date of the appointment is 1st December 2025 or as soon as possible thereafter Informal enquiries may be made to Dr Giorgia Busso, Senior Research Associate, giorgia @ ast.cam.ac.uk) If you have any queries regarding the application process please contact HR @ ast.cam.ac.uk. Please quote reference LG46896 on your application and in any correspondence about this vacancy. The University of Cambridge is a signatory of the San Francisco Declaration on Research Assessment (DORA). DORA recognises the need to improve the ways in which the outputs of scholarly research are evaluated. The University expects candidates to apply the principles of DORA when preparing their applications. We do not use journal?level metrics when assessing the quality of research outputs. Applicants should not include journal?level metrics, such as the Journal Impact Factor, anywhere in their application materials. More information about DORA, its principles and aims can be found at: https://sfdora.org/ and https://www.research?strategy.admin.cam.ac.uk/research?policy/DORA. The University values diversity and is committed to equality of opportunity. The University has a responsibility to ensure that all employees are eligible to live and work in the UK. Academic Job Offer 2038 submitted on Wed Aug 13 16:47:03 CEST 2025

Postdoc for Interstellar Objects	Closing date: 2025-09-15 Contact: Susanne Pfalzner
Postdoctoral positions available in the Sim and Data Lab Astronomy and Astrophysics at Forschungszentrum J�lich in J�lich, Germany. Duration: 2 years Application deadline: 15 September 2025 This position focuses on investigating the significance of interstellar objects in galactic-scale processes. For more details and to apply, please follow the link https://www.fz-juelich.de/de/karriere/stellenangebote/2025-232
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DYNAVERSE is a new Cluster of Excellence lead by the Universities of Cologne and Bonn. Forschungszentrum J�lich is partner in Dynaverse, which is a world-class hub of researchers with with expertise in Astrophysics, Computer Science and Mathematics. State-of-the-art research facilities to which this team has priority access combined with the expertise in high-performance computing, and data-analytics will generate new ground-breaking opportunities. The two positions advertised here are located at the J�lich Supercomputing Centre (JSC) which operates one of the most advanced supercomputing infrastructures for scientific applications in Europe ? including JUPITER, the first exascale supercomputer in Europe. The "Sim & Data Lab Astronomy and Astrophysics? (SDLAA) is a research and support structure that provides an interface between the Supercomputer facilities and the Astrophysics communities, with a research focus on star and planet formation, in particular solar system formation, interstellar objects and young star cluster dynamics. Your Job: This project uses numerical simulations to determine the relative importance of the presence of interstellar objects (ISOs) in the interstellar medium. Specifically, the various formation process, the role of ISOs passing through molecular clouds, taking part in molecular cloud collapse and disc formation. Your tasks in detail: Perform scientific work on the research topic, in collaboration with the other SDLAA members Cooperate with partners in Dynaverse on relevant adjacent topics Present / publish results in collaboration meetings, workshops and conferences and the preparation of project reports Develop and apply software tools Document software and data according to the FAIR data principles Contribute to workshops and training activities Your Profile: Master with subsequent PhD degree in astronomy, physics, computer science or equivalent degree Solid background in star and planet formation or small bodies of the solar system Experience in hydrodynamics and/or N-body simulations in the star and planet formation context Experience in the field with HPC system usage and parallel/distributed computing Knowledge in GPU-based programming would be considered an asset Proven record in publication of results in high-impact journals Programming experience in at least one the following: C, C++, Fortran Proven background in software development Great ability to work in a multidisciplinary team of scientists with heterogeneous backgrounds solving scientifically challenging problems on large computers Self-motivated personality with very good command of written/spoken English and ideally a very good command of German Our Offer: We work on the very latest issues that impact our society and are offering you the chance to actively help in shaping the change! We support you in your work with: Comprehensive training courses and individual opportunities for personal and professional further development Extensive company health management Ideal conditions for balancing work and private life, as well as a family-friendly corporate policy Flexible work (location) arrangements, e.g. remote work Flexible working hours in a full-time position with the option of slightly reduced working hours ( https://go.fzj.de/near-full-time ) 30 days of annual leave and provision for days off between public holidays and weekends (e.g. between Christmas and New Year) A large research campus with green spaces, offering the best possible means for networking with colleagues and pursuing sports alongside work Targeted services for international employees, e.g. through our International Advisory Service In addition to exciting tasks and a collaborative working atmosphere at J�lich, we have a lot more to offer: https://go.fzj.de/benefits The position is initially for a fixed term of 2 years. Salary and social benefits will conform to the provisions of the Collective Agreement for the Public Service (TV�D-Bund), pay group 13, depending on the applicant?s qualifications and the precise nature of the tasks assigned to them. All information about the Collective Agreement for the Public Service (TV�D-Bund) can be found on the BMI website: https://go.fzj.de/bmi.tvoed The monthly salaries in euro can be found here: https://go.fzj.de/bmi.tvoed.entgelt We welcome applications from people with diverse backgrounds, e.g. in terms of age, gender, disability, sexual orientation / identity, and social, ethnic and religious origin. A diverse and inclusive working environment with equal opportunities in which everyone can realize their potential is important to us. Further information on diversity and equal opportunities: https://go.fzj.de/equality Academic Job Offer 2037 submitted on Wed Aug 13 10:02:33 CEST 2025

Postdoc for Trans-Neptunian Objects	Closing date: 2025-09-15 Contact: Susanne Pfalzner
Postdoctoral positions available in the Sim and Data Lab Astronomy and Astrophysics at Forschungszentrum J�lich in J�lich, Germany. Duration: 2 years Application deadline: 15 September 2025 This position focuses on comparing observations of trans-Neptunian objects with various theoretical models. For more details and to apply, please follow the link: https://www.fz-juelich.de/de/karriere/stellenangebote/2025-229
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DYNAVERSE is a new Cluster of Excellence lead by the Universities of Cologne and Bonn. Forschungszentrum J�lich is partner in Dynaverse, which is a world-class hub of researchers with expertise in Astrophysics, Computer Science and Mathematics. State-of-the-art research facilities to which this team has priority access combined with the expertise in high-performance computing, and data-analytics will generate new ground-breaking opportunities. The two positions advertised here are located at the J�lich Supercomputing Centre (JSC) which operates one of the most advanced supercomputing infrastructures for scientific applications in Europe ? including JUPITER, the first exascale supercomputer in Europe. The "Sim & Data Lab Astronomy and Astrophysics? (SDLAA) is a research and support structure that provides an interface between the Supercomputer facilities and the Astrophysics communities, with a research focus on star and planet formation, in particular solar system formation, interstellar objects and young star cluster dynamics. Your Job: The project focusses on Tans-Neptunian objects. The key objective is to develop ML tools that provide a quantitative assessment for the quality of fit between observed properties of Trans-Neptunian objects for the various suggested theoretical models. The developed workflow should also be applicable to the other discovery science projects in Dynaverse. Your tasks in detail: Perform scientific work on the research topic, in collaboration with SDLAA members. Cooperate with partners in Dynaverse on relevant adjacent topics. Prepare and publish results in collaboration meetings, workshops and conferences and the preparation of project reports. Develop and apply software tools. Documentations of software and data according to the FAIR data principles. Contributions to workshops and training activities. Your Profile: Master and PhD degree in astronomy, physics, computer science or equivalent fields of study. Proven experience in N-body simulations and the comparison of simulation and observation results. Machine Learning skills to automise comparison process. Unbiased approach to different theoretical models. Experience in HPC system usage and parallel/distributed computing. Knowledge in GPU-based programming would be considered an asset. Proven record in publication of results in high-impact journals. Programming experience in at least one the following: C, C++, Fortran. Proven background in software development. Great ability to work in a multidisciplinary team of scientists with heterogeneous backgrounds solving scientifically challenging problems on large computers. Self-motivated personality with very good command of written/spoken English and ideally a very good command of German. Our Offer: We work on the very latest issues that impact our society and are offering you the chance to actively help in shaping the change! We support you in your work with: Comprehensive training courses and individual opportunities for personal and professional further development Extensive company health management Ideal conditions for balancing work and private life, as well as a family-friendly corporate policy Flexible work (location) arrangements, e.g. remote work Flexible working hours in a full-time position with the option of slightly reduced working hours ( https://go.fzj.de/near-full-time ) 30 days of annual leave and provision for days off between public holidays and weekends (e.g. between Christmas and New Year) A large research campus with green spaces, offering the best possible means for networking with colleagues and pursuing sports alongside work Targeted services for international employees, e.g. through our International Advisory Service In addition to exciting tasks and a collaborative working atmosphere at J�lich, we have a lot more to offer: https://go.fzj.de/benefits The position is initially for a fixed term of 2 years. Salary and social benefits will conform to the provisions of the Collective Agreement for the Public Service (TV�D-Bund), pay group 13, depending on the applicant?s qualifications and the precise nature of the tasks assigned to them. All information about the Collective Agreement for the Public Service (TV�D-Bund) can be found on the BMI website: https://go.fzj.de/bmi.tvoed The monthly salaries in euro can be found here: https://go.fzj.de/bmi.tvoed.entgelt We welcome applications from people with diverse backgrounds, e.g. in terms of age, gender, disability, sexual orientation / identity, and social, ethnic and religious origin. A diverse and inclusive working environment with equal opportunities in which everyone can realize their potential is important to us. Further information on diversity and equal opportunities: https://go.fzj.de/equality Academic Job Offer 2036 submitted on Wed Aug 13 10:00:33 CEST 2025

Gaia/Plato Software Engineer	Closing date: 2025-09-12 Contact: Dr Francesca De Angeli
Fixed-term: The funds for this post are available until 31 March 2028 in the first instance, with good prospects for further extension subject to grant funding and project development. This is an opportunity for a research software engineer to work at the Cambridge Centre of Excellence for Astronomical Data (CAMCEAD) in the Institute of Astronomy (IoA), specifically on two European Space Agency (ESA) science missions, Gaia and Plato.
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The successful candidate will work within CAMCEAD's Gaia and Plato software development teams. The role will focus on development of on-ground data processing software for both Gaia and Plato, including automation, large scale distributed processing, data analysis and data management. The work involves systems analysis, design, implementation, testing, documentation and improvement of existing code. The post-holder will have the opportunity to build upon their experience and to take on a wide selection of roles as needed. The role will also involve liaising with the wider Plato and Gaia project teams and external science users, with opportunities to interact with the wider CAMCEAD team. The successful candidate will have good practical knowledge of software and scientific processing development and at least a BSc (Hons) degree in a numerate discipline (preferably Computer Science, Computer Engineering, or a science with a significant computing element). The candidate should demonstrate knowledge of Java (with familiarity of Python an advantage) and object oriented programming. An understanding of abstraction including familiarity with software design considerations is essential. Experience of Python development would be very useful. Experience with Spark, Kubernetes and knowledge of database systems would be advantageous. Experience of the acquisition and reduction of data from astronomical facilities and with the use of database and web-based systems would be desirable. The post-holder will be required to attend meetings both elsewhere in the UK and overseas. Hence possession of a valid passport is necessary. Gaia is a space observatory that made more than three trillion observations of two billion stars and other objects during a ten year period before being decommissioned earlier this year. Development and execution of data processing and analysis for the full mission duration will be carried out over the next several years culminating in the publication of the final Gaia catalogue. Gaia's key objective is a detailed study of the Milky Way that will reveal our Galaxy's content, dynamics, current state and formation history. The IoA Gaia team are responsible for the processing and analysis of the photometric and low-resolution spectroscopic data collected by ESA's Gaia mission. Gaia's key objective is a detailed study of the Milky Way that will reveal our Galaxy's content, dynamics, current state and formation history. The IoA Gaia team are responsible for the processing and analysis of the photometric and low-resolution spectroscopic data collected by ESA's Gaia mission. Plato is a mission that will detect and characterise a huge sample of exoplanets around bright stars. The Plato spacecraft is currently scheduled to be launched at the end of 2026. Within the Plato Consortium, the IoA team are responsible for the development and operation of the Exoplanet Analysis System, which will enable the detection of the signatures of exoplanets from high- precision photometric light curves of the host stars. Staff at CAMCEAD undertake a range of activities in wide field astronomy including: lead roles in Gaia and Plato, together with other space mission projects including CHEOPS and Euclid; developing and operating pipeline processing and analysis systems for optical and near-infrared mosaic imaging surveys (e.g. VISTA, VST); spectroscopic surveys (e.g. WEAVE, 4MOST); developing pipelines tailored for the analysis of various oncological imaging data related to the IMAXT/CRUK Grand Challenge project; managing a data processing and archive centre. To apply online for this vacancy and to view further information about the role, please visit : https://www.jobs.cam.ac.uk/job/52235 . Application Instructions: Please indicate the contact details of three referees on the online application form and upload a full curriculum vitae (CV) and a list of publications (if you have such), please also provide a covering letter (1 page of A4 at minimum Font size 11) which sets out your suitability for the role. Please ensure that your referees are aware that they may be contacted by the Institute of Astronomy. The application deadline is 23:59 BST on Friday 12th September 2025. Where applicable, referees will be requested to provide references by: 3rd October 2025 Applications will be reviewed after the closing date and interviews are provisionally planned for: w/c 6th October 2025. The anticipated start date of the appointment is 1st November 2025 or as soon as possible thereafter. Salary will be Grade 7, �35,116 - �45,413 per annum, depending on experience and qualifications. Informal enquiries may be made via email to Dr Francesca De Angeli, Principal Research Associate, (fda @ ast.cam.ac.uk) If you have any queries regarding the application process please contact HR @ ast.cam.ac.uk. Please quote reference LG46779 on your application and in any correspondence about this vacancy. The University of Cambridge is a signatory of the San Francisco Declaration on Research Assessment (DORA). DORA recognises the need to improve the ways in which the outputs of scholarly research are evaluated. The University expects candidates to apply the principles of DORA when preparing their applications. We do not use journal-level metrics when assessing the quality of research outputs. Applicants should not include journal-level metrics, such as the Journal Impact Factor, anywhere in their application materials. More information about DORA, its principles and aims can be found at: https://sfdora.org/ and https://www.research-strategy.admin.cam.ac.uk/research�policy/DORA. The University actively supports equality, diversity and inclusion and encourages applications from all sections of society. The University has a responsibility to ensure that all employees are eligible to live and work in the UK. Non-academic Job Offer 2035 submitted on Tue Aug 05 12:49:41 CEST 2025

Recruitment - College of Astronomy and Natural Sciences in Torun Nicolaus Copernicus Superior School	Closing date: 2025-08-31 Contact: Maria LEZANSKA
The College of Astronomy and Natura Sciences in Torun(Poland) offers 4-year doctoral program in astronomy for highly qualified and motivated students from all over the world. Leading scientist will be invited to present guest lectures and seminars. All classes are held in English. The training program in astronomy covers many areas of modern astrophysics, including neutron stars, pulsars, black holes, gamma burst, accretion theory, relativistic astrophysics, extrasolar planetary systems, astronomy based on big data and machine learning.
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Recruitment to the College of Astronomy and Natural Sciences in Torun The Nicolaus Copernicus Superior School (https://www.sgmk.edu.pl/) stands as a public university, established under the act of April 28, 2022, concerning the Copernican Academy in Poland, that aims at international character and interdisciplinarity in science and education. Positioned with its headquarters in Warsaw, the Nicolaus Copernicus Superior School harmoniously integrates the operations of colleges situated across five cities: the College of Astronomy and Natural Sciences in Torun, the College of Medical Sciences in Olsztyn, the College of Economic Sciences and Management in Warsaw, the College of Philosophy and Theology in Cracow, and the College of Legal Sciences in Lublin. We are committed to quality and practical application of knowledge in the era of the digital revolution. Scientists from all over the world lecture at our academia. The College of Astronomy and Natural Sciences in Torun offers doctoral program in astronomy for students from all countries. We provide several 4-year scholarships available for international and national students. We invite applications from highly qualified and well-motivated students wishing to pursue a degree in astronomy. We provide a comprehensive astronomy course program on a 4-year schedule. In addition, leading scientist will be invited to present guest lectures and seminars. All classes are held in English. The training program in astronomy covers many areas of modern astrophysics, including neutron stars, pulsars, black holes, gamma burst, accretion theory, relativistic astrophysics, extrasolar planetary systems, astronomy based on big data and machine learning. The aim of the program is to prepare all students to submit a doctoral thesis and launch a successful career in astronomy, space science, industry or business. The doctoral (PhD) degree will be awarded by the Nicolaus Copernicus Superior School, according to standard rules and regulations, after acceptance of the doctoral thesis and a successful public defense of the dissertation. Successful applicants will be provided with our assistance during relocation to Torun. Additional financial support will be available for that purpose. Finally, we hope that your stay in Torun, the medieval city of Nicolaus Copernicus, with its lively social and scientific atmosphere, will be a pleasant and memorable experience. We are pleased to announce that the second* recruitment to the doctoral program at the College of Astronomy and Natural Sciences in Torun will begin on 1st of August 2025 and finishes on 31st of August 2025. The first recruitment was successfully carried out last year. We provide the scholarships for two doctoral students for academic year 2025/26. The Scholarship is 3935 PLN and 5341 PLN before and after the mid-term evaluation, respectively. Recruitment Schedule: SGMK Doctoral School Admissions Timeline: 1) Candidate registration, uploading of electronic documents, and payment of the application fee: August 1 ? August 31, 2025 2) Evaluation process: September 8 ? 19, 2025, including: Admissions interviews: September 8 ? 14, 2025 3) Announcement of the preliminary list of candidates eligible for enrollment: September 22, 2025 4) Submission of original documents by accepted candidates: September 24 ? 29, 2025 5) Issuance of official rejections to candidates not admitted: September 30, 2025 6) Announcement of the final list of admitted PhD students: September 30, 2025 You can start your recruitment at https://www.sgmk.edu.pl/doctoral-school/offer/ Good luck! PhD Position Offer 2034 submitted on Mon Aug 04 22:05:54 CEST 2025

Support Scientist (PhD) (m/f/d)	Closing date: 2025-09-30 Contact: Dr. Alexander Kraus
The Max-Planck-Institut f�r Radioastronomie (MPIfR) in Bonn (Germany) operates world-class facilities in order to do basic research in the field of astronomy, including the 100-m Effelsberg cm-wave telescope or the APEX mm/sub-mm-wave telescope in the Atacama desert in Chile. In the framework of the EU-funded ACME project (Astrophysics Centre for Multi-messenger studies in Europe) we are looking for a post-doctoral researcher as a Support Scientist (m/w/d) to be located at the 100-m telescope at Effelsberg.
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The successful candidate will work in a user support team in close collaboration with colleagues on site and scientists at the MPIfR in Bonn, e.g. from the APEX team. With a focus on instrumentation relevant for spectroscopy, the candidate?s use of the telescope for her/his own research is strongly encouraged and expected. The position will be available for two years with a potential extension. Your tasks: - Support of observers at the 100-m telescope in all phases of an observing project, especially within the ACME program. - Updates and optimization of data processing pipelines with a focus on spectroscopic data analysis. - Maintenance of the documentation of all steps relevant for observations. - Assistance in maintaining the data archive of the 100-m telescope and the APEX telescope, with the prospect of facilitating and harmonizing the access of both archives (e.g. by development of a common web-based frontend). The relative proportion of time spent on these various activities will be time variable but we expect that 1/3 of the time willbe used for the candidate?s own research. We expect: Equipped with a PhD in (radio) astronomy or astrophysics and the ability to work successfully in a highly motivated team of scientists and engineers, the successful candidate will be able to demonstrate comprehensive knowledge and experience in most of the following areas: - Extensive practical experience with observations using radio telescopes as well as knowledge of radio astronomical measurement technology (especially calibration and processing of spectroscopy or continuum data) are a great advantage. - Knowledge about radio-astronomical instrumentation. - Good programming skills in Python, as well as in object-oriented software design. - Experience with SQL databases and the version control software git is desirable. - Experience with software packages for data analysis (e.g., CLASS, GILDAS, CASA). - Good scientific track record. - Project-oriented work experience. We point out that the position is located in Effelsberg, which is not easily reachable by public transport. Hence, the capability of driving to the observatory is desirable. What we offer: - An international as well as innovative working environment in a first-class research environment. - Compelling tasks in an exciting, scientific context in which you quickly take over responsibilities and actively shape theprocesses. - A modern, well-equipped workplace, flexible working hours and individual training measures. - Payment according to the German wage agreement for the public service (TV�D-Bund) with all social benefits and anattractive pension scheme (VBL) The Max Planck Society is committed to increasing the number of individuals with disabilities in its workforce and therefore encourages applications from such qualified individuals. Furthermore, the Max Planck Society seeks to increase the number of women in areas where they are underrepresented and explicitly encourages women to apply. Please submit your application by September 30, 2025 at https://jobs.b-ite.com/en/jobposting/0b70dc6e57c199963557af477818a1e3fe2c8b8b0/apply The ACME project has received funding from the European Union?s Horizon Europe Researchand Innovation programme under Grant Agreement No 101131928. PhD Position Offer 2033 submitted on Thu Jul 31 15:03:20 CEST 2025

Two-year postdoc in Toulouse: Near-infrared radial velocities for the characterization of nearby exoplanet systems	Closing date: 2025-09-30 Contact: Claire Moutou
The objective of the 2-year postdoc is to investigate near-infrared precise radial velocity (RV) time series of cool stars obtained with SPIRou at Canada-France-Hawai?i Telescope. The position is based at IRAP (Institut de Recherche en Astrophysique et Plan�tologie) in Toulouse, South France while the project collaboration includes research teams in Grenoble and Marseille.
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SPIRou is a spectrograph and spectropolarimeter covering the 980-2450nm waveband at high spectral resolution in one shot and it is optimized for RV measurements at a precision of 1-2 m/s.? For this position, an expertise in RV measurements and/or in machine learning processing is required. Knowledge in stellar spectropolarimetry, magnetic fields, or stellar activity is welcome but not mandatory. The SPIRou data has been collected since 2019 in large surveys which consisted in the monitoring of about 80 nearby cool stars. The objective is to explore further the characteristics of noise and planetary signals present in the data, using innovative methods. The postdoctoral position is offered in the framework of the ANR project ORVET. The position can start in January 2026 with about two year duration depending on the candidate?s experience. Interested candidates should have a PhD in Astrophysics or Data Processing / Machine Learning and are requested to send to claire.moutou @ irap.omp.eu the following documents by September 30, 2025: -a CV including their list of publications -a 2-page letter of their expertise and research ideas -contact information for two referees IRAP: https://www.irap.omp.eu SPIRou: https://www.cfht.hawaii.edu/Instruments/SPIRou/ SPIRou surveys: https://spirou-legacy.irap.omp.eu/doku.php Academic Job Offer 2032 submitted on Mon Jul 28 13:21:55 CEST 2025

Junior Leader postdoctoral Fellowships, incoming and retaining	Closing date: 2025-09-25 Contact: Fundaci� "La Caixa"
The Junior Leader Postdoctoral Fellowships call is open until September 25th. Remember that there are two modalities, incoming and retaining. ?La Caixa? Foundation is launching a postdoctoral fellowships program in which candidates will be able to conduct a research project at accredited centres with the Severo Ochoa or Mar�a de Maeztu excellence award, Institutos de Investigaci�n Sanitaria Carlos IIII and units evaluated as excellent by the Funda��o para a Ci�ncia e Tecnologia of Portugal.
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Description of our Institute: The Institute of Cosmos Sciences of the University of Barcelona (ICCUB) is an interdisciplinary center devoted to fundamental research in the fields of cosmology, astrophysics and particle physics. In addition, the Institute has a strong technology program through its participation in international collaborations in observational astronomy and experimental particle physics. Moreover, the institute is an interdisciplinary centre with more than 70 long-term scientists, 20 engineers and 80 postdoctoral researchers (55% international) and PhD students (30% international) offering an international and multicultural environment. The ICCUB has been awarded the Maria de Maeztu distinction which recognizes our leadership and research impact. Our main lines of research, as well as the associated faculty members, can be found here. The ICCUB is concerned about the under representation of women, as well as other underrepresented minorities in the fields of sciences of the cosmos, and therefore strongly encourages their application. The ICCUB is located in Barcelona, considered the 6th World's Best Cities: one with near-perfect weather year-round, miles and miles of beaches, iconic parks, striking architecture and colourful neighbourhoods that march to their own beat?artistic, sophisticated, bohemian. Moreover, it is a pole of attraction for the technology sector, a top choice to establish a company in this sector, and it hosts some of the world's major technological events, such as the Mobile World Congress and the Smart City Expo. In addition, Barcelona and its metropolitan area is a leading destination on the map of global technological ecosystems and has infrastructures such as science parks, universities and the 22@ district. Junior Leader Fellowships Programme Description: The Postdoctoral Junior Leader fellowships programme is aimed at hiring excellent researchers, of any nationality, who wish to continue their research career in Spain or Portugal in the STEM area (Science, Technology, Engineering and Mathematics). The objectives of this programme are to foster high-quality, innovative research in Spain and Portugal and to support the best scientific talent by providing them with an attractive, competitive environment in which to conduct excellent research. The Postdoctoral Junior Leader fellowships programme is divided into two different frames. Incoming programme: ? Postdoctorate Junior Leader ? Incoming: 20 postdoctoral fellowships for researchers of all nationalities. They will be offered a three-year employment contract to conduct a research project at accredited centres with the Severo Ochoa or Mar�a de Maeztu excellence award, Institutos de Investigaci�n Sanitaria Carlos IIII and units evaluated as excellent by the Funda��o para a Ci�ncia e Tecnologia of Portugal. ? 3 years maximum duration ? Maximum amount: ?320,100. ? Programme of training in multidisciplinary skills Requirements: Researchers of any nationality are eligible for the Postdoctoral Junior Leader fellowships programme. In order to get accepted, candidates must meet the following requirements: ? Experience: They should have earned their doctoral degree two to seven years prior to the deadline of the call for applications. The date of the doctoral thesis defence will be understood as the date when the doctoral degree is defended. In the cases of interruption of the research activity between the date of obtaining the doctoral degree and the call deadline, the candidate may request an extension of the period in which the doctoral degree must have been obtained. ? Geographic mobility: For candidates applying to Spanish centres or units: Candidates must not have resided or have carried out their main activity (work, studies, etc.) in Spain for more than twelve months in the three years immediately preceding the closing date of the call. Short stays, such as holidays, will not be taken into account. Special mobility condition could apply for the in the cases of interruption of the research activity or researchers who have spent time in the procedure for obtaining the refugee status under the Geneva Convention. ? Complete applications: Only candidates whose applications meet all the requirements of the call may be accepted. Application: ?la Caixa? fellowship application website FAQ Retaining programme: ? Postdoctorate Junior Leader ? Retaining: 20 fellowships to carry out a postdoctoral research project at any university or research centre in Spain or Portugal. ? 3 years maximum duration ? Maximum amount: ?320,100. ? Programme of training in multidisciplinary skills Requirements: Researchers of any nationality are eligible for the Retaining modality of the Postdoctoral Junior Leader fellowships. To be eligible for admission, candidates must meet the following requirements: ? Experience: Experience: have been awarded a PhD between two and seven years prior to the closing date of the call. The date of obtaining the PhD will be understood as the date the doctoral thesis is defended. Special deadlines apply for candidates with interrupted research careers. Candidates must have carried out research stays at a centre or university outside Spain (or outside Portugal for those joining a Portuguese centre), during their doctoral or postdoctoral studies, for a total of at least 6 months before the closing date of the call. ? Geographic mobility:For candidates interested in Spanish centres or universities: candidates must have resided or carried out their main activity (work, studies, etc.) in Spain for more than 12 months in the three years immediately preceding the closing date of the call. Special deadlines will apply for candidates with interrupted research careers and for those who've gone through the process to obtain refugee status under the Geneva Convention. ? Complete applications: Only candidates whose applications meet all the requirements of the call may be accepted. Academic Job Offer 2031 submitted on Fri Jul 18 14:10:33 CEST 2025

Two Associate Editor positions for the Astronomy & Astrophysics Journal	Closing date: 2025-09-01 Contact: Arunas Kucinskas
The Board of Directors of Astronomy & Astrophysics invites applications for two Associate Editor positions in the following broad research areas: * One position in planetary science * One position in interstellar and circumstellar medium
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The new Associate Editors should possess broad and recognised expertise in their respective fields, as demonstrated by a strong record of influential published research. Familiarity with additional fields of astrophysics will be considered an advantage for both positions. For the planetary science position, the ideal candidate would also have a good understanding of some aspects of exoplanets. Candidates from underrepresented groups and geographical regions are strongly encouraged to apply. The roles require handling the peer review of approximately 200 papers annually. Limited support for office equipment and an annual indemnity are provided. The initial term of appointment is four years. Applicants should submit the following as a single PDF file: * A curriculum vitae * A list of publications * A concise letter summarising their qualifications and motivation for seeking an Associate Editor position. The letter should also describe: * Experience as a referee and/or journal editor * Potential support for the role from their home institution Applications should be e-mailed as a single PDF file to both the Chairperson and Vice-Chairperson of the Board of Directors: * Prof. Arūnas Kučinskas (Chairperson) E-mail: arunas.kucinskas @ tfai.vu.lt * Prof. L�szl� Kiss (Vice-chairperson) E-mail: kiss @ konkoly.hu Applications received by 1 September 2025 will receive full consideration. Shortlisted candidates will be invited to online interviews between 25 September and 8 October 2025. Applicants are encouraged to reserve their availability for these dates. Academic Job Offer 2026 submitted on Wed Jul 02 16:38:12 CEST 2025

Full Professor of Space-Based Astrophysics, U. Vienna	Closing date: 2025-09-17 Contact: Glenn van de Ven
In the Department of Astrophysics (https://astro.univie.ac.at/en/) within the Faculty of Earth Sciences, Geography and Astronomy, the University of Vienna seeks to appoint a Full Professor of Space-Based Astrophysics.
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Space-based observatories have opened up large, new areas of astrophysical research. By far the largest part of the electromagnetic spectrum is accessible only from space and has tremendously enriched astronomy with the discovery of new astronomical objects and previously inaccessible phenomenology. The University of Vienna has a long and successful tradition in contributing to space mission instrumentation and conducting space-based astrophysics. We seek a full professor with profound experience in astronomical space missions to lead internationally visible payload contributions and to carry out a related attractive scientific research program. We expect the professor to attract new space missions to the University of Vienna and represent Austria in the respective international mission consortia. Such space missions would in particular include new projects by the European Space Agency (ESA) for which multiple third-party funding channels are available. The professorship will profit from the well-established recognition by the national funding agency for the space program, close collaborations with other groups at the University of Vienna and the Institute for Space Research in Graz, and connections to Austrian industry. Further further information related to candidate qualifications, offers from the University of Vienna, necessary application materials and how to apply, see the announcement text: https://berufungsservice.univie.ac.at/fileadmin/user_upload/p_berufungsservice/jobs/0625/Prof/GEOWI_98_Space-Based_Astrophysics_EN_20250625.pdf Compensation and Benefits: For information on salary and included benefits see the announcement text: https://berufungsservice.univie.ac.at/fileadmin/user_upload/p_berufungsservice/jobs/0625/Prof/GEOWI_98_Space-Based_Astrophysics_EN_20250625.pdf Application Instructions: Please submit a single PDF file (LastName_FirstName.pdf) to the Dean of the Faculty, Rainer Abart (dekanat.fgga @ univie.ac.at) containing the information in English as listed in the announcement text: https://berufungsservice.univie.ac.at/fileadmin/user_upload/p_berufungsservice/jobs/0625/Prof/GEOWI_98_Space-Based_Astrophysics_EN_20250625.pdf Publication Start Date: 2025 Jun 30 Application Deadline: 2025 Sep 17 Inquiries: Name: Prof. Dr. Glenn van de Ven (Head Department of Astrophysics) Email: glenn.vandeven @ univie.ac.at Academic Job Offer 2025 submitted on Wed Jul 02 14:58:19 CEST 2025

MSCA Postdoctoral Fellowship Opportunity in Stellar Physics	Closing date: 2025-08-20 Contact: Esther Pallares
The Stellar Physics group at the ICCUB welcomes expressions of interest from outstanding postdoctoral researchers to jointly apply for the 2025 Marie Sk?odowska-Curie Postdoctoral Fellowship (MSCA-PF-2025) through the European Commission. The group offers expert mentoring and comprehensive guidance throughout the application process to help candidates develop competitive proposals.
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The research developed at the Stellar Physics group covers different stages of star formation, stellar evolution all the way from dust to life, and the study of stellar environments and their planetary systems. We aim to develop a multi-scale, multi-disciplinary approach to answer these three main questions: 1 - How do stars form? 2 - How do stars evolve in isolation; in multiple systems and as a population? 3 - How does atmospheric activity (e.g., stellar winds, flares, coronal mass ejections), including the Sun, impact their environment and how does this affect the habitability of exoplanets? To this end, the research activity of our group focuses on the following topics: Star formation with a multiwavelength approach, covering from radio to high energy spectral range. Evolution of stellar binary stars with time-domain astrophysical datasets (transients, variable and eclipsing systems, etc.), spectroscopic characterization, and stellar evolution models. Analysis and modeling of solar particle events as well as the development of solar particle radiation interplanetary environment prediction models. Understanding the impact of stellar activity (flares) over planetary atmospheres and habitability. Stellar astrophysical parameter estimation and stellar characterization from astrometry, photometry, and spectroscopy. Understanding different stellar populations within the Milky Way with large astrophysical datasets (Gaia, future GaiaNIR, the spectroscopic WEAVE survey?). New instrumentation for astrophysics for Montsec Observatory. The members of the group have leading and collaboration roles in major collaborations in the field of stellar physics, such as Gaia Data Analysis and Processing Consortium, Euclid, BlackGEM time-domain survey, Transient and Variable Science collaboration within the Vera Rubin Observatory (LSST), SKA and ?The VLA Orion A Large Survey? collaboration, Solar Orbiter and PLATO missions, and the UV-optical CubeSat mission PhotSat, entirely led by the Institute of Space Sciences of Catalonia (IEEC). In addition, the group has ongoing collaborations with European and international research institutions (Caltech, Radboud University, KU Leuven, Universidad Nacional de Mexico, among others), which can enhance the internationalization of our member?s research. The group can offer support for computing time in the Institute of Cosmos Sciences cluster. The fellow will have the opportunity to develop a career development plan and be part of a mentorship program. REQUIREMENTS: We are excited to support candidates with expertise related to the main research areas carried in our group, both from observational and theoretical perspectives. In particular, we are interested in exploring projects that can exploit the synergies between the major research lines in stellar physics, and also with other research groups at the ICCUB, such as the high energies group, the gravitational waves group, the galaxy structure and evolution, and the technological unit. Eligible Researchers Researchers can be of any nationality and must: Be in possession of PhD at the call deadline. A maximum of 8 years full-time research experience after the date of award of the doctoral degree. Not have resided or carried out their main activity in the country of the recruiting beneficiary (Spain) for more than 12 months in the 36 months immediately before the call deadline. Researchers who are refugees in an EU MS or HEU AC according to the Geneva Convention may also apply to both Fellowships, irrespective of whether they are long-term residents or not. GPF researchers must be nationals or long-term residents of EU MS or HEU AC. Applicants who apply and choose our institute as Host Institution for a MSCA Postdoctoral Fellowships (European or Global) proposal can benefit from dedicated support, which specifically consists of: Mentorship program On-demand support with dedicated staff Financial Support The salary conditions of a MSCA Postdoctoral Fellow are very competitive in relation to the average cost of living in Barcelona. It provides the following yearly funding: Monthly living allowance: 5.990? per month (to be adjusted using the corresponding country coefficient). Mobility allowance: 710? per month. Family allowance: 660? per month. How to Apply To express your interest and submit your application, please send the following documents to jobs @ icc.ub.edu: A cover letter outlining your research interests and motivation Your CV (including a list of publications) A brief research proposal (1?2 pages) Contact information for two referees Please include ?MSCA-PF-2025 Application ? Stellar Physics Group? in the subject line of your email. HOST INSTITUTION The Institute of Cosmos Sciences (ICCUB) at the University of Barcelona, Unit of Excellence Maria de Maeztu, established in 2006, focuses on cosmology, astrophysics, particle physics, quantum physics, and nuclear physics. With over 70 scientists, 20 engineers, and 90 postdoctoral researchers and PhD students (35% international), ICCUB collaborates internationally on projects like Gaia, LHCb, Virgo, MAGIC, CTA, and DESI. It also has an Advanced Technology Unit supporting experimental research requiring cutting-edge technology. From 2019 to 2023, ICCUB published 1,463 articles, averaging 8.86 citations per paper (compared to UB?s 2.45). Despite being only 2.9% of UB?s staff, ICCUB secured 8 ERC grants (16% of UB?s total) over the last 10 years and twice received the Maria de Maeztu seal of excellence. Executed funding from 2020 to 2023 includes ?21.3 million in competitive, ?2.2 million in non-competitive, and ?1.6 million from private sources. ICCUB is very active in organizing events, such as international workshops, seminars and colloquia, 438 between 2019-23, and courses on transferable skills. Additionally, ICCUB engages in graduate training, technology transfer , and scientific outreach. Academic Job Offer 2023 submitted on Mon Jun 30 07:58:41 CEST 2025

Time-domain astrophysics with the Wide-field Spectroscopic Telescope (Postdoc)	Closing date: 2025-08-31 Contact: Richard Anderson
The successful applicant will contribute to defining the top-level technical requirements imposed by the time-domain science case for the Wide-field Spectroscopic Telescope (WST www.wstelescope.com), analyze instrument requirements specified for diverse science questions, and develop figures-of-merit and other quantitative metrics that will aid to select the science drivers and their implications on the facility?s requirements. This work will be performed in close collaboration with Richard Anderson at EPFL, leader of the WST time-domain science working group.
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WST is a major instrumentation project with the potential to shape European ground-based astronomy in the 2040s. As described in the white paper (Mainieri et al. 2024, arXiv: 2403.05398), WST will be a dedicated optical spectroscopic survey facility featuring a 12m primary mirror, a 3x3 arcmin 2 integral field spectrograph, and wide-field (3.1 deg 2) high- (R~40000) and low-resolution (R~3-4000) spectrographs fed by 2000 and 30000 optical fibers, respectively. The WST consortium has received funding from the European Union and the Swiss Government to develop a detailed design concept, which the WST consortium will submit to the Expanding Horizons initiative of the European Southern Observatory in the hopes of making WST the next large ESO project. We need you to make this happen! Main duties and responsibilities: -Contributing to the definition of the time-domain science case for WST -Reviewing science cases submitted to the WST time-domain working group and understanding their requirements affecting WST?s instrumentation and/or operational model -Liaising with the community concerning technical requirements formulated -Establishing source / event catalogs for time-domain science cases -Developing figures-of-merit to quantify expected science returns according to specifications of the instruments and/or operational model -Liaising with the WST survey design and other science working groups -Organizing and contributing to remote and in-person meetings Additional areas of activity may include analysis of spectroscopic observations of pulsating stars, for example in the context of 4MOST or the VELOCE project (Anderson et al. 2024; arXiv: 2404.12280). The successful applicant shall contribute to a collaborative and inclusive team atmosphere. This includes being available for (graduate & undergraduate) student (co-)supervision and mentoring as well as remote or on-site observations in Chile and/or the Canary Islands. Profile: -PhD in astrophysics or related field by the time the appointment begins -Full working proficiency of the English language is required, some knowledge of French would be helpful for the day-to-day life but is not required -Ability to travel internationally and to legally work in Switzerland. -Strong candidates will show evidence of scientific independence, assume ownership of the projects they work on, and communicate effectively within diverse international teams. -An analytical mind that can synthesize complex subject matters even outside your own immediate research field -Strong mathematical foundation; experience with figures of merit and selection functions is highly desirable Experience: -in optical spectroscopy, especially with integral field and/or fiber-fed multi-object spectrographs (please specify any technical/instrumentation expertise) -in the analysis and interpretation of spectroscopic time-series data -with large astronomical surveys -with astronomical alerts systems (e.g., for Vera C. Rubin) and/or time-domain and/or multi-messenger astrophysics The successful applicant will become an integral member of the Standard Candles and Distances research group (https://www.epfl.ch/labs/scd/members/) and of the Laboratory of Astrophysics (LASTRO). The team is based at Sauverny Observatory near Versoix, Switzerland, where EPFL and the University of Geneva share an inspiring world-class astrophysics research environment covering a wide range of subjects. For information on research at EPFL and in Sauverny, visit https://www.epfl.ch/labs/scd/, https://www.epfl.ch/labs/lastro/, https://www.epfl.ch/labs/galspec/, and https://www.unige.ch/sciences/astro/en/. EPFL is a founding member of the WST consortium. Swiss scientists have access to ESO (e.g. VLT, ALMA, E-ELT) and ESA (e.g. HST, JWST, XMM-Newton, Euclid) facilities as well as the future SKAO. EPFL further enjoys preferred access to the 1.2m Swiss Euler telescope at La Silla observatory, Chile, as well as access to the Flemish 1.2m Mercator telescope on La Palma. EPFL is a full member of SDSS-V, DESI, and 4MOST, part of the MOONS and of the future BlueMUSE and MOSAIC consortia, and founding member of the MUST project. EPFL is recognized as one of the best Universities in Europe and covers both engineering and fundamental sciences. EPFL is located in the French-speaking part of Switzerland. However, it is fully feasible to get by in English thanks to a large international community that includes CERN and the United Nations, in addition to many corporate headquarters. Applicants desiring to follow professional development courses at EPFL, or to learn French, will be encouraged to do so. The position includes a competitive salary (depending on experience) and benefits according to the Swiss social security system (mandatory medical insurance, employer-provided accident insurance, retirement benefits, etc). The contract will be awarded on an annual basis. Funds for computer equipment, science travel, observations, publication charges, etc. are available. The ideal starting date would be in late Summer 2025. Review of applications will begin immediately. Late applications will be considered until the position is filled. Below documents should be submitted as merged PDF: -motivation letter -CV, incl. names and addresses of 3 academic references (should submit their support confidential letters to admin.LASTRO @ epfl.ch stating "WST-TD postdoc" and applicant name in the subject line) -a publication list with the 3publications most relevant to this position highlighted. A link to a private ADS library would be appreciated -research statement (3 pages max) that showcases any relevant technical expertise -if PhD not yet been awarded: anticipated PhD completion date confirmation For more information and to apply: https://careers.epfl.ch/job-invite/1590/ For further questions please contact: richard.anderson @ epfl.ch Academic Job Offer 2011 submitted on Thu Jun 12 12:43:33 CEST 2025

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