Institute of Astronomy

Binary Black Hole Spin Evolution in Various Accretion Models

SpeakerTalk DateTalk Series
Wojciech Gladysz28 July 2016Binary Stars Talks

Abstract

The scarcity and uncertainty of electromagnetic black hole spin measurements, together with a highly debatable issue of angular momentum transfer to a newly formed black hole, set ground for our theoretical effort. Using population synthesis method, we generated populations of binary star systems with black holes in the Milky Way environment.  Adopting various accretion models, we show the corresponding BH spin evolution. We also compare our results with (highly uncertain) estimates of available BH spins. It appears that LIGO/Virgo near-future detections of BH-BH mergers may provide the most reliable constraints on BH spins.

Presentation