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| Ph.D. position in observational cosmology/photometric redshifts with Euclid | Closing date: 2021-06-15
Contact: Stéphane Paltani |
| We offer a Ph.D. position at the Department of Astronomy of the University of Geneva. The successful candidate will perform research activities to support the responsibilities of the Geneva group in the Euclid mission, a cosmology mission of the European Space Agency. They will be involved in the improvement of methods to compute photometric redshifts, with applications to scientific questions. They will become a member of the Euclid Consortium, and participate in meetings dedicated to this mission. | | ▸ more | Euclid is the second Medium mission of the Cosmic Vision program of the European Space Agency. Euclid will study the evolution of the large-scale structure of the Universe through the mapping of dark matter and galaxies, in order to constrain the properties of dark energy. It is currently in the final stage of the development phase with a planned launch in 2022-2023.
The Department of Astronomy of the University of Geneva offers a modern and vibrant work environment, with a wide range of activities including theory, numerical simulations, observations and instrumental developments in the domains of exoplanets, stellar physics, galaxy evolution, observational cosmology and high-energy astrophysics. The Department of Astronomy has a very active program in the development of scientific software and operations for space missions, which it built over more than 25 years with the creation of the INTEGRAL Science Data Centre; it is now involved in several other scientific missions in space, e.g., Gaia, CHEOPS, Euclid or Athena. The Department of Astronomy is in particular an important member of the Euclid collaboration; it is hosting the Swiss Euclid Science Data Center and holds the responsibility of producing the photometric redshifts for the Euclid mission.
The Ph.D. is proposed in the framework of this collaboration. The successful candidate will be in charge of understanding the origin of the defects in the photometric-redshift determination methods, namely bias and catastrophic failures, that are impeding the performance of the weak-lensing probe of the Euclid mission, and to devise methods to alleviate these issues. The Ph.D. will also focus on astrophysics applications of photometric redshifts.
The successful candidate must hold a Masters in physics or astrophysics; they will be enrolled in the astrophysics Ph.D. cursus of the University of Geneva. They need to demonstrate a good understanding of data analysis methods and ideally show good aptitudes with programming in Python or other programming languages. Candidates must send a motivation letter, a curriculum vitae, grades and a summary of their Master thesis (two pages) to the e-mail address below. In addition one reference letter must be sent separately to the same e-mail address.
The starting date, to be agreed with the candidate, is September 1st, 2021.
All correspondence should be sent by e-mail, with the subject line containing 'Euclid PhD'. Applications will be accepted until the position is filled. For applications or for further information, please contact:
Prof. Stéphane Paltani, Stephane.Paltani @ unige.ch
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