http://arxiv.org/abs/1807.11060
The first LIGO-Virgo detections have confirmed the existence of massive black holes (BHs), with mass $30-40$ M$\odot$. Such BHs might originate from massive metal-poor stars ($Z<0.3$ Z$\odot$) or from gravitational instabilities in the early Universe. The formation channels of merging BHs are still poorly constrained. The measure of mass, spin and redshift distribution of merging BHs will give us fundamental clues to distinguish between different models. Also, a better understanding of several astrophysical processes (e.g. common envelope, core-collapse supernovae, and dynamical evolution of BHs) is decisive, to shed light on the formation channels of merging BHs.
M. Mapelli
Tue, 31 Jul 18
11/69
Comments: 10 pages, 2 figures, 1 table, published in the proceedings of the “12th Edoardo Amaldi Conference on Gravitational Waves” (Pasadena, CA, July 2017), Journal of Physics: Conference Series, 2018, volume 957, conference 1, page 012001; some typos fixed and several updates with respect to the published version
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