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SUMMARY:Astrophysics with the first gravitational-wave events: from supern
 ova asymmetries to multiple  black-hole generations - Davide Gerosa
DTSTART:20170519T120000Z
DTEND:20170519T130000Z
UID:TALK72572@talks.cam.ac.uk
CONTACT:Christopher Moore
DESCRIPTION:Gravitational-wave observations provide a new tool to study fo
 rmation and evolutionary processes of black holes. I present some first at
 tempts to extract astrophysical constraints from the gravitational-wave ev
 ents of LIGO’s first observing run. In particular\, the spin misalignmen
 t of the lightest binary black hole detected (GW151226\, “the Boxing Day
  event”) can be used to measure the linear momentum imparted to the blac
 k holes at birth\, hence the degree of asymmetry of the related supernova 
 explosions. The first events also provide marginal constraints on the pres
 ence of multiple merger generations (i.e. merging black holes which are th
 e results of previous mergers\, rather than stellar collapse). The future 
 is bright and loud: as hundreds of gravitational-wave events are expected 
 in the next few years\, these elusive gravity messengers will soon prove t
 heir immense potential to shape our understanding of the astrophysical wor
 ld.
LOCATION:Pavilion B Potter Room (B1.19)
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