Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines hep-ph
Date Mardi 5 Fevrier 2019
Heure 16:00
Institut IPHT
Salle Salle Claude Itzykson, Bât. 774
Nom de l'orateur Cyril Pitrou
Prenom de l'orateur
Addresse email de l'orateur
Institution de l'orateur IAP - Institut d'Astrophysique de Paris
Titre Anisotropies of the astrophysical gravitational background
Résumé 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.
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