Anisotropies of the astrophysical gravitational background
Cyril Pitrou
IAP - Institut d'Astrophysique de Paris
Tue, Feb. 05th 2019, 16:00-17:00
Salle Claude Itzykson, Bât. 774, Orme des Merisiers

The astrophysical background of gravitational waves (AGWB) is made up by the incoherent superposition of gravitational wave signals emitted by a large number of resolved and unresolved astrophysical sources from the onset of stellar activity until today. I present a theoretical framework to fully characterize the AGWB in terms of energy density anisotropies which is based on the resolution of Olbers' paradox. I also discuss how these results can be recovered from a Boltzmann approach with an ad-hoc GW emissivity. It is found that the predictions of the signal angular statistics depend on the astrophysical modelling, hence this observable opens a new window on the history of compact objects populations.

Contact : Filippo VERNIZZI


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