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SUMMARY:Applications of Boson Stars in Numerical Relativity - Gareth Marks
  (DAMTP)
DTSTART:20260306T130000Z
DTEND:20260306T140000Z
UID:TALK244672@talks.cam.ac.uk
CONTACT:Lorenzo Gavassino
DESCRIPTION:Boson stars (BSs)— self-gravitating configurations of a com
 plex scalar field— provide a simple\, numerically tractable model for a 
 class of exotic compact objects (ECOs). I will discuss two recent works sh
 owing how dynamical evolutions of spacetimes involving BSs can be used to 
 address theoretical and observational challenges related to ECOs. First\, 
 I will cover how evolutions of a class of ultracompact BSs\, which possess
  a pair of light rings\, find no evidence for the efficacy of a conjecture
 d dynamical instability affecting ultraompact objects\, thus presenting th
 e first long-term stable evolutions of black hole mimickers and raising th
 e possibility that a population of such objects could exist in the univers
 e. Secondly\, I will discuss results from a study of black hole-boson star
  binary mergers\, focusing on prospects for attempts to build gravitationa
 l wave template banks for astrophysical ECO searches in a model-agnostic m
 anner. 
LOCATION:Potter Room / Zoom :  https://cam-ac-uk.zoom.us/j/85131795570
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