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Portal > Offres > Offre UMR7095-CLOLAI-005 - Postdoc formation des galaxies à l'ère du JWST (images synthétiques à partir de simulations numériques et comparaison aux observations) H/F

Postdoc on computational galaxy formation in the JWST era (mock images from numerical simulations and comparison to observations) M/F)

This offer is available in the following languages:
- Français-- Anglais

Application Deadline : 29 October 2025 23:59:00 Paris time

Ensure that your candidate profile is correct before applying.

General information

Offer title : Postdoc on computational galaxy formation in the JWST era (mock images from numerical simulations and comparison to observations) M/F) (H/F)
Reference : UMR7095-CLOLAI-005
Number of position : 1
Workplace : PARIS 14
Date of publication : 08 October 2025
Type of Contract : Researcher in FTC
Contract Period : 12 months
Expected date of employment : 1 January 2026
Proportion of work : Full Time
Remuneration : between €3500 and €3700 gross monthly salary, depending on experience and CNRS pay scale
Desired level of education : Doctorate
Experience required : Indifferent
Section(s) CN : 17 - Solar system and distant universe

Missions

The project iMAGE aims to study the rise of massive galaxies from the primordial Universe to z~2. This project combines a unique JWST dataset with state-of-the art hydrodynamical simulations and machine learning techniques to understand the origins of massive galaxies.
A series of zoom-in cosmological simulations has been developed by the collaboration in order to understand the physical processes governing the extreme phases of early mass assembly in galaxies. The successful applicant will work on synthetic observations from these simulations, extract observables using the tools commonly used for observations (SourceExtractor, SED-fitting codes), and compare the simulated galaxies to JWST observations (in particular COSMOS-Web).

Activities

- Creation of synthetic observations from the numerical simulations;
- Scientific exploitation and interpretation of the comparison between simulated and real galaxies;
- Production of scientific publications and conference presentations.

Skills

- Research experience in extragalactic astrophysics. Specialisation in the analysis of JWST data is expected.
- Ability to integrate into an international team, to be reactive in exchanges with the rest of the team.
- Ability to communicate results in the form of scientific publications in peer-reviewed journals and at international conferences.

Work Context

The successful candidate will be based at IAP (Paris, France). IAP is one of the largest French centres for extragalactic astrophysics, and is made up of interconnected, dynamic and internationally visible research groups exploring a variety of topics, including galaxy evolution, large-scale structures of the Universe, the distant Universe and advanced statistical methods. Funding will be provided for travels and for computer equipment. The applicant will have access to two high-performance computer clusters and french HPC time.
COSMOS-Web is an international team of >100 permanent researchers, post-docs, PhD students, mainly in the US and Europe. The successful candidate will be in contact with this team through regular videoconferences and an annual meeting.
This position is funded by the ANR iMAGE project which started in December 2022. This project includes researchers from the Laboratoire d'Astrophysique de Marseille (LAM) and the Institut d'Astrophysique de Paris (IAP). The successful candidate will work closely with the members of the ANR iMAGE, in particular with C. Laigle (IAP), J. Lewis (CEA), O. Ilbert (LAM), Y. Dubois (IAP), M. Trebitsch (Paris observatory), H. J. McCracken (IAP) and several researchers specialised in extragalactic astrophysics (observations and simulations) and statistics.

Constraints and risks

Travels will be necessary to disseminate the results and to interact with an international team (COSMOS-Web).

Additional Information

The duration of the contract is 12 months and cannot be renewed. We are seeking to recruit someone who completed their PhD less than two years prior to the date of employment.
The starting date is desirable before the end of january 2026. We invite candidates to apply before 15 November 2025, by submitting their application on the CNRS Job Portal. Later applications will be considered until the position is filled. The application should include a letter of motivation, a CV and a list of publications, as well as a description of the candidate's past and current research activities (maximum 4 pages). Those selected for an interview will be contacted by email.