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The most ordinary formation of the most unusual double black hole merger
Krzysztof Belczynski
LIGO/Virgo Collaboration reported the detection of the most massive black hole - black hole (BH-BH) merger up to date with component masses of 85 Msun and 66 Msun (GW190521). Motiv…
Black hole - neutron star mergers: The first mass gap and kilonovae
P. Drozda, K. Belczynski, R. O'Shaughnessy +2
Observations of X-ray binaries indicate a dearth of compact objects in the mass range from . The existence of this (first mass) gap has been used to discriminat…
Non-interacting black hole binaries with Gaia and LAMOST
Grzegorz Wiktorowicz, Youjun Lu, Łukasz Wyrzykowski +4
Until recently, black holes (BHs) could be discovered only through accretion from other stars in X-ray binaries, or in merging double compact objects. Improvements in astrometric a…
Phase-dependent study of near-infrared disk emission lines in LB-1
Jifeng Liu, Zheng Zheng, Roberto Soria +19
The mass, origin and evolutionary stage of the binary system LB-1 has been the subject of intense debate, following the claim that it hosts an 70 black hole, in st…
The Origin of inequality: isolated formation of a 30+10Msun binary black-hole merger
A. Olejak, M. Fishbach, K. Belczynski +4
The LIGO/Virgo collaboration has reported the detection of GW190412, a BH-BH merger with the most unequal masses to date: 24.4-34.7 Msun and 7.4-10.1 Msun (a mass ratio of q=0.21-0…
Formation of low-spinning 100 Msun black holes
Krzysztof Belczynski, Sambaran Banerjee
It is speculated that a merger of two massive stellar-origin BHs in a dense stellar environment may lead to the formation of a massive BH in the pair-instability mass gap (50-135 M…