Davide Gerosa

Caltech


The origin of low spin black holes in LIGO/Virgo mergers

Krzysztof Belczynski, Jakub Klencki, Georges Meynet, Christopher L. Fryer, Duncan A. Brown, Martyna Chruslinska, Wojciech Gladysz, Richard O’Shaughnessy, Tomasz Bulik, Emanuele Berti, Daniel E. Holz, Davide Gerosa, Mirek Giersz, Sylvia Ekstrom, Cyril Georgy, Abbas Askar, Jean-Pierre Lasota.
arXiv:1706.07053 [astro-ph.HE].

Looks like some of the LIGO black holes have low spins (better, low effective spins). In this paper we show these values can be accommodated with standard “field binaries”, i.e. formation channels where binary black holes form from binary stars.