Home

About Me

I am a CNRS Research Director (Directeur de Recherche, DR) at the Astroparticle and Cosmology Laboratory (APC), Université Paris Cité, where I develop robust statistical and computational methods to extract cosmological information from observations of the Cosmic Microwave Background (CMB).

Since 2023, I have been the Principal Investigator of the ERC Consolidator Grant SciPol (Science from the large-scale polarization of the CMB), a five-year project funded by the European Research Council. SciPol brings together researchers, engineers and students to develop the next generation of analysis methods for CMB polarization, with applications to primordial gravitational waves, cosmic birefringence, reionization and precision cosmology. The project combines expertise in cosmology, statistics, high-performance computing and scientific software.

My research focuses on:

  • statistical inference and Bayesian methods for cosmology;
  • CMB data analysis, map-making and component separation;
  • scalable algorithms for large astrophysical datasets;
  • optimization and forecasting of present and future cosmological experiments.

I am actively involved in several international collaborations, including Simons Observatory, LiteBIRD, POLARBEAR/Simons Array, CMB-S4, and LSST DESC. Within Simons Observatory, I co-lead the B-mode Analysis Working Group, contributing to the development of analysis pipelines and the scientific exploitation of polarization data. I also contribute to performance studies and analysis preparation for the LiteBIRD satellite mission.

Beyond my own research, I supervise PhD students, postdoctoral researchers and research engineers, and contribute to the development of open scientific software for the cosmology community. I am committed to fostering interdisciplinary collaborations at the interface between cosmology, statistics and scientific computing.

Since 2026, I have been leading the Cosmology Group at APC and serving as Director of the CNRS Research Group (GdR) Cosmological Physics (CoPhy), which brings together the French cosmology community across institutes and disciplines. I am also involved in teaching, outreach and science communication, including collaborations with illustrators and educators to develop new ways of communicating modern cosmology.