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Portail > Offres > Offre UMR9012-SYLPRA0-049 - (H/F) Chercheur en CMB cosmologie et physique des neutrinos

M/F - Researcher in CMB cosmology and neutrino physics

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

Date Limite Candidature : jeudi 22 décembre 2022

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General information

Reference : UMR9012-SYLPRA0-049
Workplace : ORSAY
Date of publication : Thursday, November 10, 2022
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 October 2023
Proportion of work : Full time
Remuneration : Between 2889.51 and 3321.55 € gross per month
Desired level of education : 5-year university degree
Experience required : 1 to 4 years


The ANR BATMAN (Better Accuracy and robusTness for Mass Assessment of Neutrino) proposes a post-doctoral fellowship on combining CMB observations to constrain neutrino physics and 𝝠CDM extensions. The project aims to combine current CMB observations with consistent modelling of astrophysical foregrounds and systematic effects to constrain the neutrino mass sum and extensions of the cosmological model.


The post holder will work with Matthieu Tristram on exploiting the latest CMB measurements (from space missions and ground-based observatories) to derive robust and accurate constraints on the neutrino sector, including but not limited to the neutrino hierarchy.
The successful candidate will be responsible for the development of a likelihood function combining existing CMB data sets and taking advantage of the new models to accurately describe the foreground residuals in the CMB angular power spectra. The postdoc will use public data (such as Planck) as well as upcoming data releases from ground-based experiments (such as advACT and SPT3g).


We expect the successful candidate to have a good general knowledge of modern cosmology, statistical methods, numerical methods and programming languages, as well as some experience in cosmological data analysis. Knowledge of neutrino physics would be desirable.

Work Context

The postdoc will be integrated into the research team of the Irène Joliot Curie laboratory which is located at the University of Paris-Saclay (Orsay, France) and which offers a high level scientific environment for the stimulation, the support, and the diversity of activities envisaged by the candidate beyond this project.
The ANR project includes three nodes: one for the study of secondary anisotropies (mainly the reionisation epoch) and their impact on cosmological constraints (IAS, Orsay), one for the study of the physics of the gases involved in CMB analyses (IRAP, Toulouse), one for the construction of the coherent likelihood of combined CMB observations and the modelling of the extension of the LCDM model (IJCLab, Orsay-Paris).
The position therefore involves teamwork and close collaboration with partner teams.

Additional Information

The earliest hiring date is spring 2023 and the latest is December 2023.

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