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SUMMARY:Ville Vaskonen (BIST\, Barcelona)
DTSTART:20210303T113000Z
DTEND:20210303T123000Z
DTSTAMP:20260423T041927Z
UID:HETatNTUA/8
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/HETatNTUA/8/
 ">Primordial black holes in light of LIGO-Virgo observations</a>\nby Ville
  Vaskonen (BIST\, Barcelona) as part of High Energy Theory\, Gravity  and 
 Cosmology Seminars @ NTUA\n\n\nAbstract\nAssuming that a fraction of dark 
 matter is in primordial black holes (PBHs)\, a population of PBH binaries 
 is formed before matter-radiation equality from large Poisson fluctuations
  in their spatial distribution. Though many of these binaries are disrupte
 d by a nearby PBH or a small cluster of PBHs\, a large fraction of them su
 rvives until they merge. In this talk I will describe the calculation of t
 he PBH merger rate and show that the LIGO-Virgo observations give strong c
 onstraints on the abundance of O(10) solar mass PBHs. I will also discuss 
 the possibility that some of the observed GW events are from PBH mergers.\
 n
LOCATION:https://researchseminars.org/talk/HETatNTUA/8/
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