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Research Fellow - Extreme Radio Flares from Young Stellar Objects	Closing date: 2026-04-16 Contact: Jan Forbrich
Applications are invited for a 36-month postdoctoral position at the University of Hertfordshire, located in Hatfield just north of London (UK). The successful candidate will analyse the first simultaneous ALMA-VLA observations of flaring young stellar objects in the Orion Nebula Cluster, modelling extreme stellar flares and investigating their connection to solar flare physics within the Orion Radio All-Stars project. We look forward to your application!
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Post Title: Research Fellow - Extreme Radio Flares from Young Stellar Objects Apply here: https://ce0997li.webitrent.com/ce0997li_webrecruitment/wrd/run/ETREC179GF.open?WVID=26210100HV&VACANCY_ID=8387833xS8 SBU/Department: School of Physics Engineering and Computer Science/Department of Physics, Astronomy and Mathematics/Centre for Astrophysics Research (CAR) FTE: 1.0FTE (working 37 hours per week) Duration of Contract: Fixed term (36 months) Annual Leave: 35 days plus standard public holidays and an additional 4 days including the closure of our office between Christmas and New Year Location: College Lane Campus, University of Hertfordshire, Hatfield Main duties and responsibilities Applications are invited for a 36-month position to lead and publish original scientific investigations in the area of star formation. The successful applicant will use recently obtained data from an ALMA high-priority project featuring the first simultaneous ALMA and VLA observations of the Orion Nebula Cluster, led by Jan Forbrich. Additionally, extensive previous observations using VLA, Chandra, VLBA and ALMA as part of the Orion Radio All-Stars project will be used to characterise individual sources. With radio light curves and spectral index time series extracted you will work with solar physicist Mykola Gordovskyy (also at CAR) on initial physical modelling to better understand these extreme flares and to compare them with solar flares. You will also be expected to prepare and submit articles for publication in refereed journals and to assist with or lead initial physical modelling or observational follow up of sources of interest. This may require you to visit and use astronomical telescopes overseas. You will work with Jan Forbrich, Mike Kuhn and Mykola Gordovskyy at the Centre for Astrophysics Research as well as the wider Orion Radio All-Stars collaboration. You will also be expected to contribute to a positive and productive working atmosphere within the Centre for Astrophysics Research, by contributing to the execution and organisation of various meetings, seminars, journal clubs that make CAR (and UH in general) a vibrant place to work. The post - one of 3 new STFC-funded positions awarded to CAR as a result of the STFC Astronomy Grants scheme (2024) - is available from 01 October 2026 and the successful candidate will ideally be in post as soon as possible thereafter. Skills and experience required You will have an impressive track record of research in a relevant area of expertise, including observational astrophysics. You will also have a record of submitting/publishing scientific research in leading astronomical journals, experience with scientific computing/scripting tasks and experience of presenting research findings such as contributions to conferences and symposia at a local and national level. Qualifications required You will be educated with a Degree or equivalent level 6 qualification, or higher qualification in a relevant discipline and must either hold, or by the start date have submitted their thesis for, a PhD (or equivalent level 8 qualification) in Astrophysics or a closely related discipline. Please view the job description and person specification for a full list of the duties and essential criteria. Applications should be submitted online via the recruitment website and should be accompanied by PDF versions of a CV, a list of publications and a personal statement/cover letter (maximum two sides of A4 paper) explaining your motivation for applying, summarizing your research interests and what you would bring to the position (in reference to the Person Specification). Finally, you must also include the contact details of two referees willing to write on your behalf. An appointment to this role may require an Academic Technology Approval Scheme (ATAS) certificate. Please note, this post cannot be visa sponsored unless you can evidence a PhD / Doctorate. Contact Details/Informal Enquiries: for more information or to discuss the post, please contact Jan Forbrich ( j.forbrich @ herts.ac.uk ). Closing Date: 16 April 2026 Interview Date: 27 and 28 April 2026 Reference Number: REQ000589 Date advert placed: 16 March 2026 The Astrophysics group is part of the Department of Physics, Astronomy and Mathematics, and is a thriving research group of 60 academic staff, research fellows and postgraduate students. The department takes pride in the diversity of its staff, and holds both an IoP Juno Champion and an Athena-Swan Silver award. We encourage applications from all individuals meeting our essential criteria, irrespective of gender or other underrepresented groups. The UH vision is to transform lives and UH is committed to Equality, Diversity and Inclusion and building a diverse community. UH offers a range of employee benefits including generous annual leave and discounted Sports Village memberships, personal and professional development, a flexible location policy, and family-friendly policies. #GoHerts Academic Job Offer 2150 submitted on Mon Mar 16 13:47:59 CET 2026

Scientific Coordinator	Closing date: 2026-04-17 Contact: Amelie Saintonge
The Star Formation and Galaxy Evolution department at the Max Planck Institute for Radio Astronomy is seeking to fill the position of Scientific Coordinator as soon as possible, initially for a period of three years. The Scientific Coordinator will support the research activities of the group of 40 researchers including senior staff, postdoctoral researchers and graduate students, and will work in close collaboration with the director, Prof. Dr. Am�lie Saintonge. There is also an opportunity to take part in some of the research activities of the department.
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Your tasks and responsibilities: - Supporting the director and the research group with scientific project management and collaborations, as well as planning and coordinating meetings, conferences, and scientific visits - Working in collaboration with the APEX project scientist and manager to support operations, scientific activities, and coordination of activities with external stakeholders - Assisting with reporting, grant proposal preparation, and project management - Coordinating scientific job advertisement, recruitment processes, student projects and internships - Coordinating external communications and public outreach activities of the department alongside the institute?s Press Officer - Up to 20% of the time could be made available to participate in the research activities of the department Your qualifications and profile: Necessary skills and qualifications: - A PhD in Astronomy or a related field - Excellent written and oral communication skills in English - Excellent organisational skills, strategic thinking, and a proven track record of reliable and efficient delivery of outcomes - Ability to work effectively with academic, administrative, and external stakeholders in an international environment - Good practical knowledge of MS Office and LaTeX Desired skills: - Research experience in the field of star formation, interstellar medium and/or galaxy evolution studies - Excellent written and oral communication skills in German - Familiarity with Linux computer systems What we offer: MPIfR is the leading radio astronomical institution in Germany, and a vibrant, international research hub with a staff of over 300, including scientific staff and students, engineers and instrumentation specialists, as well as administrative staff, and guest scientists. You will get the opportunity to not only work closely with the director and staff of the Star Formation and Galaxy Evolution department, but also to interact and exchange with colleagues across the entire institute, and in particular the institute's Research Coordinator. The appointment will initially be for 3 years, with a start date as soon as possible, and latest by September 2026. Remuneration is within the framework of the German wage agreement for the public system (TV�D-Bund) in level 13. The offer includes comprehensive healthcare coverage, other social benefits, and subsidy for public transport (?Jobticket?). We offer family-friendly working hours and the possibility for remote work in accordance with the institute?s working arrangements. How to apply: Interested and qualified individuals are encouraged to apply by submitting an academic CV, a motivation letter of up to two pages, and the contact details of two people who can be contacted for references. Applications should be submitted through the MPIfR application portal under the address given below by April 17, 2026. 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. Full job description and instructions to apply can be found at: https://jobs.b-ite.com/jobposting/18c9e9d3c55691565ec205501759c335f7c021290 Academic Job Offer 2154 submitted on Sat Mar 21 11:11:46 CET 2026

Postdoctoral Researcher in Radio Transients (UC-MPIfR-SHAO)	Closing date: 2026-04-19 Contact: Marilyn Cruces
We invite applications for a postdoctoral position to work on combined centimetric-millimetric studies of astrophysical transients within the international collaboration around the phased-ALMA mode for time-domain astronomy. The position is funded by an ALMA grant and is based in the Radio Transients Lab led by Prof. M. Cruces at Pontificia Universidad Cat�lica de Chile, in collaboration with the group of Prof. M. Kramer at the Max Planck Institute for Radio Astronomy (MPIfR) and the group of Dr. K. Liu at the Shanghai Astronomical Observatory (SHAO).
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Pontificia Universidad Cat�lica de Chile (UC) is a leading research university in Chile and Latin America. The university hosts the Institute for Astrophysics and the Astroengineering Center, where research spans theoretical and observational astronomy, instrumentation and space science. The Radio Transients Lab is a Max Planck Partner Group of the Max Planck Institute for Radio Astronomy and currently hosts 20+ members, including graduate students, development engineers, and undergraduate students. The group focuses on the origin of transient radio emission, with particular emphasis on neutron star (NS)-associated phenomena, including fast radio bursts (FRBs), pulsars, and magnetars. Job description -------------------- A number of fundamental questions remain regarding the radio emission of NS transients. In pulsars and magnetars, it is still unclear how far the radio emission extends toward millimeter wavelengths, whether a spectral turn-up is present, and what this implies about the underlying emission mechanisms. These questions are particularly important for understanding how the radio emission of NSs relates to other classes of transient phenomena, including FRBs, and whether their emission also extends into the millimeter regime. What we expect from you --------------------------------- The successful candidate will analyse and disseminate results from observations of transient sources obtained with the phased ALMA (PAM) mode plus the centimetric follow-up. The ALMA data consist of time-domain and spectral observations acquired during several observing campaigns. The analysis will involve single-pulse and periodicity searches, timing, characterization of the emission, as well as searches for narrowband spectral features. The candidate will contribute to the development and improvement of processing and calibration pipelines aimed at streamlining PAM observations and making this observing mode more accessible to the community. The postdoctoral researcher is expected to carry out extended research visits at the partner institutes, MPIfR and SHAO. Requirement ----------------- - A PhD in astronomy, physics, computer science, or a related fields by the appointment date (May/June 2026) Necessary skills --------------------- - Prior experience in radio astronomy in either (1) time-domain observations or (2) spectroscopy. If experience in one of these areas is missing, a strong commitment to promptly acquire the necessary expertise is expected. Training opportunities can be arranged - Strong proficiency and experience in programming, particularly in Python - Strong proficiency in spoken and written English - Enthusiasm for working in international teams Desired skills ----------------- - Experience working with computer clusters - Experience applying machine learning methods to data - Willingness to supervise graduate students What we offer ------------------ - Funding for 2 years, with the possibility of extension based on mutual agreement and funding availability - Competitive remuneration based on the ALMA-ANID funding scheme, including healthcare coverage - Competitive vacation allowance and paid annual leave - Travel funding for national and international conferences - Opportunities for extended research visits at MPIfR and SHAO How to apply ----------------- Interested and qualified individuals are encouraged to submit the following documents: - Curriculum vitae including links to publications. Maximum 3 pages, filename: CV_Lastname.pdf - Research statement. Maximum 2 pages, filename: Research_Lastname.pdf - At least two letters of recommendation, to be sent directly by the referees The application and recommendation letters should be sent to rtlab.secretary @ gmail.com before 12:00 UTC on April 19, 2026. Applications will be reviewed until the position is filled. After submission, shortlisted applicants will go through an online interview process before selecting the most suitable candidate. We expect the selection process to be completed by the end of April 2026. Contact ---------- Prospective applicants can contact Prof. M. Cruces (mscruces @ uc.cl) for further details. Academic Job Offer 2160 submitted on Mon Mar 30 13:36:10 CEST 2026

Postdoctoral Researcher in Radio Transients (UC-MPIfR-SHAO)	Closing date: 2026-04-19 Contact: Marilyn Cruces
We invite applications for a postdoctoral position to work on combined centimetric-millimetric studies of astrophysical transients within the international collaboration around the phased-ALMA mode for time-domain astronomy. The position is funded by an ALMA grant and is based in the Radio Transients Lab led by Prof. M. Cruces at Pontificia Universidad Cat�lica de Chile, in collaboration with the group of Prof. M. Kramer at the Max Planck Institute for Radio Astronomy (MPIfR) and the group of Dr. K. Liu at the Shanghai Astronomical Observatory (SHAO).
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Pontificia Universidad Cat�lica de Chile (UC) is a leading research university in Chile and Latin America. The university hosts the Institute for Astrophysics and the Astroengineering Center, where research spans theoretical and observational astronomy, instrumentation and space science. The Radio Transients Lab is a Max Planck Partner Group of the Max Planck Institute for Radio Astronomy and currently hosts 20+ members, including graduate students, development engineers, and undergraduate students. The group focuses on the origin of transient radio emission, with particular emphasis on neutron star (NS)-associated phenomena, including fast radio bursts (FRBs), pulsars, and magnetars. Job description -------------------- A number of fundamental questions remain regarding the radio emission of NS transients. In pulsars and magnetars, it is still unclear how far the radio emission extends toward millimeter wavelengths, whether a spectral turn-up is present, and what this implies about the underlying emission mechanisms. These questions are particularly important for understanding how the radio emission of NSs relates to other classes of transient phenomena, including FRBs, and whether their emission also extends into the millimeter regime. What we expect from you --------------------------------- The successful candidate will analyse and disseminate results from observations of transient sources obtained with the phased ALMA (PAM) mode plus the centimetric follow-up. The ALMA data consist of time-domain and spectral observations acquired during several observing campaigns. The analysis will involve single-pulse and periodicity searches, timing, characterization of the emission, as well as searches for narrowband spectral features. The candidate will contribute to the development and improvement of processing and calibration pipelines aimed at streamlining PAM observations and making this observing mode more accessible to the community. The postdoctoral researcher is expected to carry out extended research visits at the partner institutes, MPIfR and SHAO. Requirement ----------------- - A PhD in astronomy, physics, computer science, or a related fields by the appointment date (May/June 2026) Necessary skills --------------------- - Prior experience in radio astronomy in either (1) time-domain observations or (2) spectroscopy. If experience in one of these areas is missing, a strong commitment to promptly acquire the necessary expertise is expected. Training opportunities can be arranged - Strong proficiency and experience in programming, particularly in Python - Strong proficiency in spoken and written English - Enthusiasm for working in international teams Desired skills ----------------- - Experience working with computer clusters - Experience applying machine learning methods to data - Willingness to supervise graduate students What we offer ------------------ - Funding for 2 years, with the possibility of extension based on mutual agreement and funding availability - Competitive remuneration based on the ALMA-ANID funding scheme, including healthcare coverage - Competitive vacation allowance and paid annual leave - Travel funding for national and international conferences - Opportunities for extended research visits at MPIfR and SHAO How to apply ----------------- Interested and qualified individuals are encouraged to submit the following documents: - Curriculum vitae including links to publications. Maximum 3 pages, filename: CV_Lastname.pdf - Research statement. Maximum 2 pages, filename: Research_Lastname.pdf - At least two letters of recommendation, to be sent directly by the referees The application and recommendation letters should be sent to rtlab.secretary @ gmail.com before 12:00 UTC on April 19, 2026. Applications will be reviewed until the position is filled. After submission, shortlisted applicants will go through an online interview process before selecting the most suitable candidate. We expect the selection process to be completed by the end of April 2026. Contact ---------- Prospective applicants can contact Prof. M. Cruces (mscruces @ uc.cl) for further details. Academic Job Offer 2161 submitted on Mon Mar 30 13:36:10 CEST 2026

Elevate Your PhD Experience with a Studentship at the European Southern Observatory (ESO)!	Closing date: 2026-04-20 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 organization, 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 for details on employment conditions and benefits. https://www.eso.org/public/jobs/conditions/students/ Apply online at ESO Recruitment. https://recruitment.eso.org/ Deadline: 20 April 2026. Applications will be reviewed as soon as the deadline passes. PhD Position Offer 2140 submitted on Tue Feb 24 17:10:17 CET 2026

Postdoctoral fellowship specialising in galaxy formation and evolution (3 years)	Closing date: 2026-04-24 Contact: Ilani Loubser
The Centre for Space Research (CSR) at North-West University (NWU), Potchefstroom, South Africa, is inviting applications for a research fellow specialising in galaxy formation and evolution studies.
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The successful candidate is expected to carry out extragalactic research in optical, infrared or radio observational astronomy or simulations relevant to the group's interest in galaxy evolution, particularly in galaxy groups and clusters. The group is actively involved in various MeerKAT large surveys, projects involving the Southern African Large Telescope (SALT), and other related national and international initiatives. The fellow will have access to South African astronomical facilities, as well as established international collaborations within the CSR network. The successful candidate is required to have: - A PhD in Astronomy, Astrophysics (awarded within the last 5 years) - Research experience in galaxy formation and evolution and/or optical, infrared or radio astronomy - An publication record, commensurate with career stage The starting date is June 2026 or as soon as possible thereafter. The appointment will be for 3 years, depending on satisfactory performance. Renumeration is: R350,000 per annum (ZAR, tax-free); R50,000 per annum for research running expenses, and a once-off relocation allowance of R20,000. Interested applicants should send a CV (including a list of publications), statement of research experience and interests, and the contact information of 3 references, to Ilani Loubser (Ilani.Loubser @ nwu.ac.za) by April 24th, 2026 (with 'NWU postdoctoral fellowship' in the subject line). The North-West University is committed to diversity and equality in education and employment. For further information, please e-mail Ilani.Loubser @ nwu.ac.za. Academic Job Offer 2159 submitted on Sun Mar 29 09:54:31 CEST 2026

ESA Archival Research Visitor Programme	Closing date: 2026-04-30 Contact: Guido De Marchi
To increase the scientific return from its space science missions, the European Space Agency (ESA) welcomes applications from scientists interested in pursuing research projects based on data publicly available in the ESA Space Science Archives (https://www.cosmos.esa.int/web/esdc).
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The ESA Archival Research Visitor Programme is open to scientists, at all career levels, who are affiliated with institutes in ESA Member States and Cooperating States. All visits must comply with the ESA security directives, which may necessitate additional checks. Early-career scientists and PhD students are particularly encouraged to apply. We encourage applications from women and minorities. The peer-review evaluation process is anonymised to ensure equal opportunities for all applicants. During their stay, visiting scientists will have access to archives and mission specialists for help with the retrieval, calibration, and analysis of archival data. In principle, all areas of space research covered by ESA science missions can be supported. Residence lasts typically between one and three months, also distributed over multiple visits. Research projects can be carried out at ESAC (Madrid, Spain) and at ESTEC (Noordwijk, Netherlands). To offset the expenses incurred by visitors, ESA covers travel costs from and to the home institution and provides support for lodging expenses and meals. Applications received by 30 April 2026, 23:59 UTC, will be considered for visits in autumn 2026 and winter 2027. For further details, including areas of research and contact information, please refer to https://www.cosmos.esa.int/web/esdc/visitor-programme or write to the programme coordinators at arvp @ cosmos.esa.int Academic Job Offer 2138 submitted on Mon Feb 23 11:13:31 CET 2026

PhD Position on Theoretical Astrophysics (Galaxy Formation and Evolution)	Closing date: 2026-04-30 Contact: Marta Reina-Campos
The theoretical astrophysics and cosmology group at�IGFAE�invites applications for a�4-year�PhD position focused on galaxy formation and evolution, to be supervised by Marta Reina-Campos: https://academicjobsonline.org/ajo/jobs/31876. Despite mounting evidence for reciprocal impact over the lifetime of the Universe from the�James Webb Space Telescope, star clusters are overlooked in models of galaxy formation and evolution. The selected candidate will overcome this issue by developing state-of-the-art numerical simulations, and comparing their predictions against observational data.
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GOAL:�Understanding the formation of dense star clusters, and how they impact the evolution of their host galaxies is one of the central challenges of modern astrophysics. Despite mounting evidence for reciprocal impact over the lifetime of the Universe from the�James Webb Space Telescope, star clusters are overlooked in models of galaxy formation and evolution. This PhD project will explore this by developing state-of-the-art hydrodynamical simulations of dwarf galaxies.�The successful candidate will then compare the predicted properties of star clusters and dwarf galaxies against data from some of the most advanced observational facilities (e.g., the�Atacama Large Millimeter Array, the�James Webb Space Telescope�and the�Euclid�satellite). REQUIREMENTS:�Applicants should hold (or expect to obtain before the start date) a Master's degree in Physics, Astrophysics, or a closely related field. A background in one or more of the following areas is desirable: (a) stellar evolution; (b) galaxy formation and evolution; (c) computational astrophysics; (d) analysis of numerical simulations and large datasets. Candidates should demonstrate solid programming skills (e.g., Python, C/C++, or similar languages) and experience with scientific data analysis. Prior experience with cosmological simulations will be positively considered, but is not mandatory. Excellent written and oral communication skills in English are required. HOW TO APPLY:�Interested candidates should submit send the following documents through AJO (https://academicjobsonline.org/ajo/jobs/31876): - A CV (including academic record and programming experience) - A brief statement describing previous research experience, current research interests, and motivation for pursuing this PhD position (max. 2 pages) - Two reference letters to be sent via AJO. DEADLINE:�Applications will be reviewed on a rolling basis until the position is filled. To ensure full consideration, candidates are strongly encouraged to apply�before April 30th, 2026. ABOUT IGFAE:�IGFAE is a joint research institute of the�University of Santiago de Compostela�and the�Xunta de Galicia. The institute has been awarded both the�"Mar�a de Maeztu Unit of Excellence"�and�"Red CIGUS" distinctions, recognising its international scientific excellence. We are an Equal Opportunity Employer and particularly welcome applications from under-represented groups in terms of gender identity, ethnic or social origin, disability, or any other characteristic.�The selected candidate will benefit from access to state-of-the-art high-performance computing facilities, active international collaborations, and dedicated support for participation in conferences and workshops. PhD Position Offer 2158 submitted on Fri Mar 27 15:37:00 CET 2026

PhD Research Position in Stellar and Binary Population Modeling at the University of Geneva	Closing date: 2026-04-30 Contact: Prof. Tassos Fragos
Applications are invited for a PhD position in theoretical and computational astrophysics at the Department of Astronomy of the University of Geneva. The successful candidate will join the group of Prof. Tassos Fragos and contribute to the development and calibration of next-generation panchromatic spectral synthesis models of stellar populations that include the effects of binary evolution, using the POSYDON binary population synthesis framework.
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The project combines two complementary research directions. The first is the development of new spectral modeling capabilities for stellar and X-ray binary populations, nebular emission, and diffuse feedback from stellar winds and supernovae. The second is the calibration of these models against observational constraints from populations of stripped stars, Wolf-Rayet stars, supergiants, and supernovae, with the goal of constraining uncertain aspects of stellar and binary evolution. The exact balance of tasks will depend in part on the background and strengths of the selected candidate, as well as on the overall composition of the research team. The PhD candidate will work closely with other members of the group and with collaborators in the POSYDON collaboration. The Department of Astronomy of the University of Geneva offers an active and stimulating research environment in astrophysics, with strengths spanning stellar astrophysics, compact objects, exoplanets, galaxy evolution, and computational methods. Applicants should hold, or be close to completing, a Master's degree in astronomy, astrophysics, or physics, by the start of the appointment. We seek candidates with a strong background in astrophysics and interest in one or more of the following areas: stellar evolution, binary stars, compact objects, stellar populations, supernovae, or computational astrophysics. Solid programming skills, in particular in Python, are expected. Prior experience with stellar evolution, population synthesis, or statistical analysis is also welcome. The duration of the PhD program is 4 years. The initial appointment will be for one year and renewed subject to satisfactory progress, according to University of Geneva regulations. The expected starting date is 01/09/2026, although some flexibility is possible. Applications should include a cover letter, a curriculum vitae, a brief statement of research interests and previous experience, transcripts, and the names and email addresses of at least two references. Applications should be submitted by email to Prof. Tassos Fragos (anastasios.fragkos @ unige.ch), with the subject line "PhD Position Geneva - [Applicant Name]". All application materials must be combined into a single PDF file. Letters of recommendation will be requested only for shortlisted candidates. Review of applications will begin immediately and will continue until the position is filled. Informal inquiries may be addressed to Prof. Tassos Fragos at anastasios.fragkos @ unige.ch. Compensation and Benefits Compensation Range: CHF 54,685 to 63,071 gross annual salary, in accordance with SNSF salary regulations and University of Geneva scales. Included Benefits: Standard Swiss social security, accident insurance, competitive pension contributions, and other employment benefits in accordance with University of Geneva policies. Doctoral students employed at the University of Geneva also benefit from 30 working days of annual leave, in addition to official public holidays and the year-end university closure. PhD Position Offer 2162 submitted on Tue Mar 31 17:24:41 CEST 2026

Postdoc position on stellar standard candles	Closing date: 2026-04-30 Contact: Richard I. Anderson
Applications are invited for a Postdoctoral researcher position on Standard Candles and the Local Distance Network. The successful applicant will work on strengthening the direct measurement of the local Hubble constant via the Local Distance Network by improving the accuracy of distance measurements based on stellar standard candles. Emphasis lies on the analysis of photometric observations from state-of-the-art space- (e.g., HST, JWST, Roman) and ground-based facilities (e.g., VLT, ELT); algorithmic contributions to the Local Distance Network are also welcome.
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Your profile - Master and PhD degree in astrophysics or related discipline (completion required by starting date) - Self-motivation and evidence of (beginning) research independence - Strong statistical and analytical skills - Experience in optical/infrared crowded-field photometry, preferably including time-series observations - Experience in programming and image processing - Experience in distance measurements based on standard candles and/or analysis of resolved stellar populations is an asset - Open communication and collaborative spirit - Very good command of the English language What we offer - A collaborative and dynamic international research group where your initiative is valued - Personalized supervision, disciplinary training, and mentoring - Opportunities for conducting astronomical observations - Funding for travel and publications - An interdisciplinary and collaborative research environment with expertise spanning from the Solar system to the Early Universe - Access to powerful observational infrastructure, including ESO facilities, the Hobby-Eberly-Telescope, and 1m-class telescopes on both hemispheres, among others - A strong commitment to diversity, equality, and mutual respect - Part-time appointments possible The position is based in G�ttingen, a charming university city at the heart of Germany. It is funded by zukunft.niedersachsen, the joint science funding program of the Lower Saxony Ministry of Science and Culture and the Volkswagen Foundation for a duration of 3 years. Please submit your application as a single pdf, including a motivation letter, a research statement (about 3 pages 11pt font), PhD degree certificate, curriculum vitae, list of publications (links to curated scixplorer/ADS libraries welcome), and contact details of three references electronically at https://obp.uni-goettingen.de/de-de/OBF/Index/76381 Review of applications will continue until the position is filled. For general information, please contact the Institute?s secretariat: sekr @ astro.physik.uni-goettingen.de For specific questions about the position, please contact richard.anderson @ uni-goettingen.de The University of G�ttingen is an equal opportunities employer and places particular emphasis on fostering career opportunities for women. Qualified women are therefore strongly encouraged to apply in fields in which they are underrepresented. The university has committed itself to being a family-friendly institution and supports their employees in balancing work and family life. The University is particularly committed to the professional participation of severely disabled employees and therefore welcomes applications from severely disabled people. In the case of equal qualifications, applications from people with severe disabilities will be given preference. A disability or equality is to be included in the application in order to protect the interests of the applicant. Academic Job Offer 2164 submitted on Wed Apr 08 14:51:36 CEST 2026

Associate senior lecturer in mathematical statistics (possibly oriented towards astronomy)	Closing date: 2026-05-03 Contact: Katja Frid
Associate senior lecturer employment for four years, with the potential for promotion to a permanent position as a senior lecturer.
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Relevant applications should include research and proven expertise in machine learning, statistical modeling, uncertainty quantification, stochastic modeling, and/or other modern statistical methods for data analysis. The applicants do not have to formally possess a PhD in mathematics, but are required to have deep knowledge in both theory and applications of mathematical statistics. The position is closely linked to the research at the department, mainly to the fields of material sciences and/or astrophysics, and includes numeric calculations, mathematical modelling, experiments, observations, and statistical data analysis. For more information, contact persons, and how to apply, see the official advertisement at the link below. https://web103.reachmee.com/ext/I005/1015/job?site=7&lang=UK&validator=e5819a4704cd849685049472c0c17895&job_id=4463 Academic Job Offer 2157 submitted on Fri Mar 27 14:26:30 CET 2026

Four (4) New Associate Editors for Astronomy & Astrophysics Journal	Closing date: 2026-05-04 Contact: Arunas Kucinskas
The Board of Directors of Astronomy & Astrophysics invites applications for four Associate Editor positions in the following broad research areas: * One position in planetary science and exoplanets * One position in solar physics * One position in interstellar and circumstellar medium * One position in theoretical astrophysics
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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 the theoretical position, we seek a candidate working in any area of theoretical astrophysics, ideally with expertise across a broad range of topics in the field. 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. Arunas Kucinskas (Chairperson) E-mail: arunas.kucinskas @ tfai.vu.lt * Prof. L�szl� Kiss (Vice-chairperson) E-mail: kiss @ konkoly.hu Applications received by 4 May 2026 will receive full consideration. Shortlisted candidates will be invited to online interviews on 2 June 2026. Applicants are encouraged to reserve their availability for this date. Non-academic Job Offer 2166 submitted on Thu Apr 09 15:49:14 CEST 2026

PhD student in stellar/Galactic astrophysics at Uppsala University, Sweden	Closing date: 2026-05-05 Contact: Andreas Korn
PhD student in astrophysics, with focus on stellar chemical compositions and Galactic evolution in the framework of the ESA Gaia and ESO 4MOST Galactic surveys We are looking for a PhD student in astrophysics to conduct research in connection with the ESA Gaia space mission with its astrometric, photometric and spectroscopic data as well as with the ESO 4MOST survey facility collecting millions of stellar spectra starting in 2026. The PhD student will work with Drs. Andreas Korn and Ulrike Heiter, Gaia researchers at Uppsala University.
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About Physics and Astronomy at Uppsala University The Department of Physics and Astronomy is one of the largest departments at Uppsala University. It comprises close to 400 employees, including around 125 PhD students. The department conducts world class research and education within both theoretical and experimental physics and is engaged in extensive cooperation with external partners. The research is performed at 10 research divisions, and touches upon everything from the incomprehensibly small to the large within e.g. energy supply, climate development, new materials, and the Universe. This whole spectrum of research is also mirrored in the courses and educational programmes offered by the department. Around 2500 students take the department's courses at basic and advanced level each year. Read more at https://uu.se/physics. At the Division of Astronomy and Space Physics, research is conducted on stellar physics, planetary systems, galaxies and cosmology, atomic astrophysics, and astronomical instrumentation. The division participates in a number of international scientific collaborations around telescopes and satellites. Duties of the PhD student The successful candidate will become a member of the Gaia Data Processing and Analysis Consortium and will use Gaia Data Release 4 (DR4) data for scientific projects and help to prepare Gaia DR5, Gaia's final catalogue (to be published in 2030), in particular astrophysical parameters derived by Coordination Unit 8. Gaia data will also be combined with high-resolution spectra and results from 4MOST's surveys, at least one of S2 (Galactic halo), S4 (Galactic disk and bulge) and S13 (Stellar clusters). The doctoral student position is a 4-year appointment, and the candidate will primarily devote the time to their own research studies. Extension, up to a maximum total employment of five years, is possible by including department duties at a level of at most 20%, typically teaching. The position is fully financed, and the salary is in accordance with local guidelines at Uppsala University. Requirements To meet the entry requirements for doctoral studies, you must * hold a Master's (second-cycle) degree in astronomy, physics or a related discipline, or? * have completed at least 240 credits in higher education, including at least 120 credits in physics or astronomy, and * have completed at least 60 credits at Master's level including an independent project worth at least 15 credits (1 year full time study corresponds to 60 credits), or * have acquired substantially equivalent knowledge in some other way. We are looking for candidates with * a strong interest to pursue research in stellar and/or Galactic survey astrophysics, * good communication skills as well as good oral and written proficiency in English, * excellent study results, * a high level of creativity and thoroughness, * a structured approach to problem-solving, and * an ability to work both independently and in a team. Additional qualifications Previous experience of research and/or study in astronomy, experience with astronomical spectroscopy, and programming/data analysis skills will be considered a merit. The quality of scholarly writing (project reports, theses, publications) will be given significant weight. Rules governing PhD students are set out in the Higher Education Ordinance chapter 5, �� 1-7 and in Uppsala University's rules and guidelines. About the application The application must include a cover letter (maximum 2 pages) in which you briefly explain why you are applying for this position and summarize any previous research experience; a curriculum vitae (CV)including contact information for two independent reference persons (email and telephone number);degree certificate and register extract with grades (translated into English or Swedish); examples of your scholarly writing, preferably your master thesis (or draft thereof), publications and other relevant documents. Personal circumstances that may be relevant to the assessment, e.g. parental leave, should be mentioned in the applicant's CV. The application should be written in English. Additional questions in the application form will be used to assess qualifications. Interviews and aptitude tests may be conducted as part of the selection procedure. About the employment The employment is a temporary position according to the Higher Education Ordinance chapter 5 � 7. Scope of employment: 100 %. Starting date: 2026-09-01 or as agreed. Placement: Uppsala, Sweden For more details and a link to the application platform, see https://www.uu.se/en/about-uu/join-us/jobs-and-vacancies/job-details?query=918487 PhD Position Offer 2167 submitted on Thu Apr 09 16:09:50 CEST 2026

Joint York-UvA postdoctoral position in fast radio burst localization	Closing date: 2026-05-08 Contact: Ziggy Pleunis
We are seeking a postdoctoral researcher who is excited about driving the very-long baseline interferometry (VLBI) localization of fast radio bursts (FRBs) with the CHORD telescope and its outrigger stations and using the large samples of detected FRBs and their milliarcsecond localizations from both CHIME and CHORD in order to elucidate the nature of FRBs and use them as probes to study the wider Universe. This is a 3-year joint position between York University, Toronto, Canada and the University of Amsterdam, Amsterdam, the Netherlands.
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Background: The Department of Physics and Astronomy at York University and the Anton Pannekoek Institute for Astronomy of the University of Amsterdam (UvA) invite applications for a postdoctoral research position under the supervision of Professors Paul Scholz (York), Ziggy Pleunis (UvA) and Jason Hessels (UvA). This is a 3-year position, with the successful applicant employed at York for the first 1.5 years and the following 1.5 years at UvA. The position is supported in part by York University?s Global Research Excellence Initiative, which aims to foster impactful global research networks. The position is available immediately, with a flexible start date. Both research groups at the UvA and York University are focussed on the study of fast radio bursts (FRBs), mysterious flashes of radio waves of millisecond or shorter duration coming from far outside of our Galaxy. The origins of FRBs remain elusive, but a key discriminator between models is the environments from which they arise. While an ~arcsecond localization allows for the unambiguous association with a host galaxy, a subarcsecond localization allows for pinpointing FRBs to within their host galaxy and the association with stellar populations. The current world?s best FRB detector, the CHIME telescope, was recently upgraded to a very long baseline interferometry (VLBI) experiment by the addition of three Outrigger stations. Building on the technology developed for CHIME, we are now constructing the Canadian Hydrogen Observatory and Radio-transient Detector (https://www.chord-observatory.ca/home), which will also have two Outrigger sites. Overall purpose of postdoctoral position: We are seeking a postdoctoral researcher who is excited about driving the VLBI localization of FRBs with CHORD and its outrigger stations and using the large samples of detected FRBs and their milliarcsecond localizations from both CHIME and CHORD in order to elucidate the nature of FRBs and use them as probes to study the wider Universe. There will be opportunities to contribute to telescope commissioning, which may include visits to telescope sites. You?ll also benefit from the embedding in the AstroFlash research group (https://astroflash-frb.github.io/), which has been leading FRB localizations at mas scales with the European VLBI Network through the PRECISE project. The successful candidate will have the opportunity to join the CHIME/FRB and CHORD collaborations and make use of the data produced by CHIME, CHORD, and their Outrigger telescopes. Key responsibilities: The Postdoctoral Visitor will have the following responsibilities: - Devise a research plan together with York and UvA supervisors, conduct research, and publish research results in the area of fast radio transients; - Collaborate with other faculty members, postdocs, and students in the York FRB and AstroFlash research groups as well as international collaborators in CHORD, CHIME/FRB collaborations; - Potentially co-advise research projects of PhD, MSc and BSc students at both York and UvA; - Travel to CHORD and outrigger site to assist with commissioning activities; - Write or assist in writing research proposals; - Contribute to creating an open, safe and inclusive working environment. Educational qualifications: Applicants must have completed all requirements for a PhD in astronomy, astrophysics or a related field. Training/Experience required: A demonstrated record of related research experience; experience in very-long baseline interferometry is an asset. Compensation and Salary: At York: - Salary of $80,000 CAD per year with a term length of 18 months. - For information on the extended health benefits available to York postdoctoral researchers see: https://www.yorku.ca/gradstudies/wp-content/uploads/sites/184/2024/08/pdv-health-care-spending-account-information-sheet.pdf - International candidates may refer to the Immigration & Relocation website (https://www.yorku.ca/hr/immigration-relocation/) for further information on immigration requirements. At UvA: - Upon satisfactory performance at York, we offer a temporary employment contract for 38 hours per week for a period of 18 months, with a salary of ?3546 to ?5538 (scale 10) gross per month. - Besides the salary and a vibrant and stimulating environment at Science Park we offer you multiple fringe benefits: - 232 holiday hours per year (based on fulltime) and extra holidays between Christmas and 1 January; - multiple courses to follow from our Teaching and Learning Centre; - multiple courses on topics such as leadership for academic staff; - multiple courses on topics such as time management, handling stress and an online learning platform with 100+ different courses; - 7 weeks birth leave (partner leave with 100% salary; - partly paid parental leave; - the possibility to set up a workplace at home; - a pension at ABP for which UvA pays two third part of the contribution; - the possibility to follow courses to learn Dutch. - For more information about our extensive package of secondary employment benefits, take a look here: https://www.uva.nl/en/faculty/faculty-of-science/working-at-the-faculty/working-at-the-faculty-of-science.html How to apply: Applicants should submit the following information in a single PDF file: - a CV - a list of publications - a brief statement of past and current research and your scientific interests (no more than 3 pages, including references). - Two letters of references to be sent via email to pscholz @ yorku.ca by May 8, 2026. Completed applications should be sent electronically to pscholz @ yorku.ca by May 8, 2026. If you have any questions about the position or require additional information please contact Paul Scholz (pscholz @ yorku.ca) and/or Ziggy Pleunis (z.pleunis @ uva.nl). Academic Job Offer 2163 submitted on Tue Apr 07 17:39:53 CEST 2026

PhD position on stellar standard candles and/or variable star populations	Closing date: 2026-05-15 Contact: Richard Anderson
Applications are invited for a PhD position on stellar standard candles and/or variable star populations. The successful applicants will use large astronomical surveys and targeted observations to improve the distance accuracy and astrophysical understanding of stellar standard candles. Contributions to the ESA Gaia mission or the 4-meter Multi-Object Spectroscopic Telescope (4MOST) are foreseen. Further contributions to the VELOcities of CEpheids (VELOCE) project and the Wide-field Spectroscopic Telescope are also welcome.
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Your profile - Master's or equivalent degree in physics or astronomy for admission to the doctoral program (completion required by starting date) - Strong mathematical/statistical and analytical skills - Experience with coding and data analysis, preferably including time-series and/or large data sets - Prior experience in astronomical research is desirable - Willingness to contribute to ongoing observing programs - Very good command of the English language What we offer - Personalized supervision and disciplinary training - Opportunities for conducting astronomical observations - Funding for participation at conferences and workshops - An interdisciplinary and collaborative research environment with expertise spanning from the Solar system to the Early Universe. - Access to powerful observational infrastructure, including ESO facilities, and the Hobby-Eberly-Telescope, among others. - A strong commitment to diversity, equality, and mutual respect The part-time position (60% TV-L E13) is based in G�ttingen, a charming university city at the heart of Germany. It is funded by zukunft.niedersachsen, the joint science funding program of the Lower Saxony Ministry of Science and Culture and the Volkswagen Foundation for a duration of 3 years. Detailed information about the Georg-August University School of Science (GAUSS) program is available here: https://www.uni-goettingen.de/de/doctoral+candidates/565763.html Please submit your application as a single pdf, including a motivation letter, a research statement (about 3 pages 11pt font), Master and Bachelor degree certificates, curriculum vitae, list of publications (links to curated scixplorer/ADS libraries welcome), and contact details of three references electronically at https://obp.uni-goettingen.de/de-de/OBF/Index/76377 Review of applications will continue until the position is filled. For general information, please contact the Institute?s secretariat: sekr @ astro.physik.uni-goettingen.de For specific questions about the position, please contact richard.anderson @ uni-goettingen.de The University of G�ttingen is an equal opportunities employer and places particular emphasis on fostering career opportunities for women. Qualified women are therefore strongly encouraged to apply in fields in which they are underrepresented. The university has committed itself to being a family-friendly institution and supports their employees in balancing work and family life. The University is particularly committed to the professional participation of severely disabled employees and therefore welcomes applications from severely disabled people. In the case of equal qualifications, applications from people with severe disabilities will be given preference. A disability or equality is to be included in the application in order to protect the interests of the applicant. PhD Position Offer 2165 submitted on Wed Apr 08 14:53:13 CEST 2026

Editor in Chief	Closing date: 2026-06-01 Contact: Sylvia Martinez
The American Astronomical Society (AAS) is conducting a search for the AAS Editor in Chief. The AAS Editor in Chief is responsible for developing and implementing a long-term editorial strategy for the Society?s journals portfolio and ensuring the portfolio?s continued excellence.
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The AAS?s five community-owned, peer-reviewed, open-access journals collectively received more than 9,000 submissions and published more than 6,500 manuscripts in 2025. The journals boast a diverse and international authorship, and they consistently feature some of the most-read and most-cited research results in the astronomical sciences. The Editor in Chief will oversee this prestigious portfolio and lead an international editorial board of more than 50 PhD scientists. The Editor in Chief will work with the AAS Director of Scholarly Publishing and staff to efficiently manage workflow through editorial review processes, to maintain and motivate a high standard of performance among editorial staff, and to adjudicate any disputes that may arise during manuscript review. They will also work with the AAS Chief Executive Officer, the AAS Publications Committee, the AAS publishing team, and outside partners to develop opportunities for innovation, and they will represent and promote AAS publications at national and international conferences, including the two annual AAS meetings. The ideal candidate will have a strong background in the physical sciences and editorial experience with scientific scholarly publishing, complemented by outstanding interpersonal and communication skills. They will demonstrate high ethical standards and the ability to engage thoughtfully with a diverse, international community of authors and reviewers. A commitment to editorial excellence, sound judgment, emotional intelligence, and professionalism is essential. This is a full-time position open to applicants with a PhD in astronomy, astrophysics, or a related field. The physical location of the Editor in Chief may be at the AAS Headquarters in Washington, DC, at any institution that provides appropriate professional resources, or may be fully remote. More details The AAS Editor in Chief is responsible for overseeing the editorial direction and quality of all AAS scholarly journals (the peer-reviewed Astrophysical Journal, Astrophysical Journal Letters, Astrophysical Journal Supplement, Astronomical Journal, and Planetary Science Journal, as well as Research Notes of the AAS and the Bulletin of the American Astronomical Society). This oversight includes setting the strategic direction for the journals in partnership with the AAS Publications Committee, the Board of Trustees, and the AAS Director of Scholarly Publishing (DSP); managing the peer-review process and the Lead and Scientific Editors; working closely with the AAS publishing staff and our publishing partner, IOP Publishing, to efficiently manage workflow through editorial review processes and production; adjudicating author/reviewer complaints; making final decisions on all content published while upholding the journal?s reputation within the scholarly community; and ensuring the journal maintains the highest standards. Qualifications 1. PhD in astronomy, astrophysics, or a related field. 2. Strong publication record in high-impact journals in the field of astronomy or closely related disciplines. 3. Experience with editorial function for peer-reviewed scholarly journals, preferably in astronomy or closely related discipline. 4. Ability to manage a large team (~50) of editors and make timely decisions to facilitate their work. 5. Excellent oral and written communication skills, good analytic abilities, and a strong commitment to maintaining high interpersonal standards. 6. Collaborative, diplomatic, and empathetic working style. Responsibilities Editorial Vision and Strategy ? Set the journals? editorial vision, scope, and focus, aligning with current research trends. ? Develop and implement editorial policies to ensure high-quality submissions and rigorous peer review. ? Identify potential thematic issues or special features for the journals. ? With publishing partners, the Publications Committee, and AAS publishing staff, strategically identify, develop, and deploy enhancements for the journals and the peer-review process to support the strategic goals of the AAS and of the AAS journals. ? With the AAS Chief Executive Officer, Chief Financial and Operating Officer, and DSP, ensure the journals meet the financial goals set by the Board of Trustees. ? Adapt the journals and maintain international leadership in a rapidly evolving scholarly publishing landscape. Peer Review ? Ensure the proper evaluation of submitted manuscripts for relevance, originality, and quality, and make all final publication decisions, delegating those decisions appropriately to the Lead Editors. ? Through the Lead Editors, ensure the proper assignment of manuscripts to appropriate Scientific Editors and reviewers based on expertise, while avoiding potential conflicts of interest. ? Oversee the peer-review process ? resolving any conflicts or concerns raised by reviewers, authors, or editors ? and the individual performance of all editors. ? Maintain high standards for a fair, respectful, and speedy peer-review experience. To apply Informal expressions of interest and/or questions for the search committee should be sent to EICSearch @ aas.org. All inquiries will be treated as confidential. Non-academic Job Offer 2151 submitted on Wed Mar 18 14:53:37 CET 2026

Second call of UPSaclay-STAR-Phi Postdoctoral Fellowship Programme	Closing date: 2026-07-15 Contact: Fr�d�ric Galliano
The Graduate School of Physics at Universit� Paris-Saclay (France) is opening the second call of its postdoctoral fellowship programme: UPSaclay-STAR-phi, supported by the EU Marie Curie COFUND action.
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Through this call, the programme will recruit up to 22 international postdoctoral researchers, for 24-month research projects in one of the 40 laboratories of the Graduate School, at the SOLEIL synchrotron, or at the French National Metrology Lab (LNE). This includes 4 astrophysics laboratories: the Department of Astrophysics (DAp) of CEA Paris-Saclay, the Institut d'Astrophysique Spatiale (IAS), the Laboratoire Atmosph�res et Observations Spatiales (LATMOS) and the Laboratoire de Physique des Plasmas (LPP). - Application deadline: July 15th, 2026. - Expected start of fellowships: early 2027 (flexible). Applicants will propose their own research project aligned with the School?s wide-ranging fields, from fundamental to applied physics. Notice that the postdoctoral candidate must not have been based in France for more than 12 months, during the past 3 years. Website of the programme: http://www.cofund-physics.universite-paris-saclay.fr/ Do not hesitate to resend this call to anyone potentially interested. Academic Job Offer 2168 submitted on Thu Apr 16 18:01:18 CEST 2026

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