Seules les adresses mails institutionnelles sont acceptées lors de la création d'un compte. La création de compte est modérée, merci d'attendre leur validation.
Only institutional email addresses will be accepted when asking for an account. Account creation is moderated, please wait until then.
Weekly seminars

Stochastic gravitational wave background from binary black holes

by Irina Dvorkin (IAP Paris)

jeudi 9 février 2017 de à (Europe/Paris)
at Annecy-le-Vieux ( Auditorium )
9 chemin de Bellevue 74940 ANNECY LE VIEUX
Description
The recent detection of gravitational waves by Advanced LIGO demonstrates the existence of binary black holes that merge within the age of the Universe. Moreover, the first LIGO event originated from the merger of black holes more massive than previously observed in X-ray binaries in our Galaxy. Future observations with Advanced LIGO and VIRGO may be able to distinguish between different models of black holes formation by probing their mass distribution. In this talk I will describe a framework that can be used to calculate the mass distribution of merging black hole binaries and its evolution with redshift and to test different scenarios of black hole formation while accounting for observational constraints on the cosmic star formation rate and metallicity of the interstellar medium. I will also discuss the implications of the black hole mass distribution for the stochastic gravitational wave background and the constraints that can be obtained on the distribution of the initial orbital parameters of binary systems.