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Reference : UMR7164-NADOKA-008
Workplace : PARIS 13
Date of publication : Monday, July 19, 2021
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 September 2021
Proportion of work : Full time
Remuneration : Remuneration between 2728,25 euros gross/month and 3145,68 euros gross/month
Desired level of education : 5-year university degree
Experience required : Indifferent
The Postdoctoral Fellow will work with James Bartlett on cosmology with galaxy clusters and cross-correlations between Euclid/Rubin and next generation CMB surveys, all within the context of the Euclid, Rubin, Simons Observatory and CMB-S4 efforts.
While both LSST and Euclid are still in preparation, we will apply our algorithms to simulations and the recently acquired observations from the UNIONS/CFIS survey (https://www.cosmostat.org/projects/unions-cfis).
- Develop software required for the scientific analysis of galaxy cluster catalogs and measurements of cross-correlations between large-scale structure and the CMB
- Test and evaluate code performance and scientific accuracy
- Validate obtained results
- Publish results in refereed scientific journals
- Present results at meetings of the French Euclid and/or LSST consortia, and at general meetings of the Euclid, LSST, Simons Observatory and CMB-S4 consortia
- Present results at national and international conferences
Candidates must possess a Ph.D. in astrophysics with specialization in the following areas: galaxy clusters and large-scale structure.
Experience with scientific computing, statistics and data analysis in the context of cosmology and astrophysics is recommended. Notions of machine learning would be appreciated.
Know how :
- Experience in statistical data analysis, in image and signal processing, and with associated tools.
- Expertise in programming (Python, IDL or C++). Experience with Tensorflow desired.
- Good knowledge of Linux operating systems.
Soft skills :
- Ability to work in a team
- Analytical abilities and good communication skills
- Autonomy in problem solving and ability to adapt to new technologies
- Programming (Python, ou IDL, ou C++). Experience with Tensorflow desired.
- Linux operating systems.
The Astroparticle and Cosmology (APC; http://apc.u-paris.fr/) laboratory of the University of Paris seeks applications FOR A POSTDOCTORAL FELLOWSHIP in the area of dark energy research, with specific emphasis on participation in the European Space Agency's (ESA) Euclid Mission and the Rubin Observatory Legacy Survey of Space and Time (LSST). Understanding the nature of dark energy, responsible for the observed accelerated expansion of the universe, is arguably the most challenging question facing Physics and cosmology today. Planned for launch in 2023, the Euclid mission will survey the extragalactic sky from the Earth-Sun Lagrange point 2 with the aim of constraining the evolution of dark energy using weak gravitational lensing, galaxy clustering, galaxy cluster evolution and cross-correlations with the cosmic microwave background (CMB). Rubin will begin operations in 2023, applying the same set of observational probes across the Southern sky over the course of its ten-year survey.
The Euclid and Rubin groups at APC are involved in both the science analysis of the surveys and in the development of the Euclid science ground segment. We are particularly active in galaxy cluster science, cross-correlation with the CMB and weak gravitational lensing, and we are developing novel techniques applying machine learning and artificial intelligence in these areas. There is a strong synergy between the Euclid, Rubin and CMB efforts. We seek candidates eager to work with us in the area of dark energy studies with the aim of contributing in particular to the Euclid mission and the synergy between Euclid and Rubin. Experience with scientific computing, statistics and data analysis in the context of cosmology and astrophysics is recommended.
The cosmology group at APC is actively engaged in a number of forefront experimental efforts, including teams working on the Euclid mission, the Rubin LSST survey and the next generation CMB experiments (Simons Observatory, LiteBird space mission, CMB-S4). The cosmology group benefits from the dynamic scientific context at APC that hosts research groups dedicated to theory, neutrino physics, high-energy astrophysics and gravitational waves, including the Virgo consortium and the LISA space mission. The laboratory is situated on the campus of the University of Paris (https://u-paris.fr/en/) bordering the Seine.
Constraints and risks
-travel is to be expected
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