Dr Camille Bonvin - Testing the laws of gravity and dark matter properties with cosmological observations

Wednesday 21 Jan 2026, 12:00 → 15:00 Europe/London

610 (G.O. Jones Bulding)

https://cern.zoom.us/j/68995045975?pwd=fdpw3jZ4ZPU61gbaTtDASbS03qKbf4.1

 

About the speaker: 

Camille Bonvin is a theoretical cosmologist whose work focuses on large-scale structure and precision cosmology, with emphasis on testing gravity and the ΛCDM framework using galaxy clustering and weak gravitational lensing. Her research spans modified gravity, dark energy/dark matter phenomenology, relativistic effects in cosmological observations, and non-linear structure formation (including phase correlations), as well as gravitational waves. She has held research positions at CEA Saclay (IPhT), Cambridge (IoA/DAMTP), and CERN, and since 2020 is Associate Professor at the University of Geneva. She also played a key role in Euclid as coordinator of the theory work package on relativistic effects in observations (WP9), and was co-chair of the cosmology working group for eLISA.

13:30 → 14:00 Biscuits/Coffee/Socialization

14:00 → 15:00 Testing the laws of gravity and dark matter properties with cosmological observations

In 1998, two groups of astrophysics discovered that the expansion of our Universe is accelerating, in direct contradiction with our expectations from General Relativity. This strange behaviour of our Universe could either be due to a new form of energy, called dark energy, or to a modification of the laws of gravity at large, cosmological scales. In this talk I will discuss how cosmological observations can be used to test the validity of General Relativity and the nature of dark matter. I will present novel observables, that can be used to search for deviations from the standard cosmological model.

Convener: Dr Camille Bonvin (University of Geneva)