In this letter, we note that the observed in the LIGO / Virgo experiment ratio of the detection rate of black holes to the rate of detection of binary neutron stars requires the assumption of a "conservative" collapse of massive stars into a black hole: almost all the mass of the collapsing star goes under the horizon. This is consistent with the large masses of black holes detected by LIGO/Virgo. On the other hand, the assumption of a small loss of matter during the collapse into a black hole is in good agreement with the small eccentricity of Single-lined Binaries. At the same time, the absence of X-rays from most black holes in binary systems with blue stars is explained. We argue that three sets of LIGO / Virgo observations and data on the Single-lined Binary with a Candidate Black Hole Component confirm the scenario of the evolution of massive field binaries.
@article{arxiv.2101.08979,
title = {Black Holes LIGO/Virgo Domination and Single-lined Binaries with a Black Hole Candidate Component},
author = {Vladimir Lipunov and Evgeny Gorbovskoy and Valeria Grinshpun and Daniil Vlasenko},
journal= {arXiv preprint arXiv:2101.08979},
year = {2021}
}