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SUMMARY:On the AGN Origin of Gravitational Wave Sources observed by LIGO/V
 IRGO - Bence Kocsis\, Oxford University
DTSTART:20211025T130000Z
DTEND:20211025T140000Z
UID:TALK163543@talks.cam.ac.uk
CONTACT:Alexander Rasskazov
DESCRIPTION:With the detection of gravitational waves emitted during black
  hole and neutron star mergers\, LIGO has recently opened the field of gra
 vitational wave astrophysics. In this talk I will review the astrophysical
  processes that may be responsible for the formation of the observed event
 s. The event rate distribution with mass\, spins\, eccentricity and redshi
 ft may be used to discriminate among different processes that lead to blac
 k hole mergers. I will show that the standard astrophysical merger pathway
 s are already in tension with LIGO/VIRGO observations. New ideas may be ne
 eded to explain the origin of the detected sources. I will discuss the pos
 sibility that black hole mergers happen in active galactic nuclei where th
 e interaction with a gaseous disk helps to form binaries\, and a combinati
 on of dynamical and gas effects facilitate the merger of the binaries.
LOCATION:Online
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