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SUMMARY:Eccentricity in Gravitational-Wave Transients - Isobel Romero-Shaw
  (Monash University)
DTSTART:20211203T130000Z
DTEND:20211203T140000Z
UID:TALK165817@talks.cam.ac.uk
CONTACT:Justin Ripley
DESCRIPTION:LIGO and Virgo have now reported 90 gravitational-wave signals
  from coalescing compact binaries. The paths that these objects trace arou
 nd each other in the fragments of seconds before they merge can contain a 
 wealth of information about the previous lives of these objects. Binary co
 mpact objects have two overarching formation channels: isolated\, in which
  the pair live from birth to death as a binary without any external influe
 nce\, and dynamical\, in which two compact objects become bound in a popul
 ous environment like a star cluster. Isolated binaries are expected to tra
 ce circular paths around each other close to merger. However\, when binari
 es form dynamically\, their paths can be elliptical. In this talk\, I expl
 ain how different formation channels lead to different distributions of ec
 centricity. I present eccentricity measurements obtained for LIGO and Virg
 o’s binary black holes. Finally\, I show how the orbital eccentricities 
 already measured may have implications for every binary so far detected by
  LIGO and Virgo.
LOCATION:Potter room/Zoom
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