Context:
The context of this PhD is the study of different aspects in late-time cosmology and gravity in the context of ground-based detectors such as LIGO and Virgo and in particular future 3rd generation detectors such as Einstein telescope (ET).

RESEARCH THEME: Using the AdS/CFT correspondence to study phases of gauge theories at strong coupling, at finite temperature and density. A related problem is to understand the physics of cold nuclear matter in neutron stars

Astronomical sources are observed nowadays across different domains of electromagnetic spectrum (from radio to gamma-rays) and different astronomical "messengers" (photons, neutrinos, gravitational waves). Combining different types of observational data we have learned that some types of sources operate huge high-energy particle accelerators / colliders boosting particle energies to ten million times higher energies than reached at the Large Hadron Collider at CERN. 

La découverte des ondes gravitationnelles et des source(s) astrophysiques des neutrinos de hautes énergies ont marqué le début d’un nouveau type d'astronomie, "astronomie multi-messagère". L'idée de l'approche multi-messagère est de combiner les signaux électromagnétiques (radio, visible, rayons X et gamma) provenant des sources astronomiques avec des signaux neutrino et/ou des ondes gravitationnelles pour établir la nature des phénomènes physiques ayant lieu dans les sources comme les trous noirs et les étoiles à neutrons.