Growth of stellar mass black holes in dense molecular clouds and GW190521. (arXiv:2009.11326v2 [astro-ph.HE] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Rice_J/0/1/0/all/0/1">Jared R. Rice</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_B/0/1/0/all/0/1">Bing Zhang</a>
A stellar mass black hole can grow its mass noticeably through Bondi
accretion, if it is embedded in an extremely dense and massive molecular cloud
with slow motion with respect to the ambient medium for an extended period of
time. This provides a novel, yet challenging channel for the formation of
massive stellar-mass black holes. We discuss how this channel may account for
the massive binary black hole merger system GW190521 as observed by LIGO/Virgo
gravitational wave detectors as well as the claimed massive black hole
candidate LB-1.
A stellar mass black hole can grow its mass noticeably through Bondi
accretion, if it is embedded in an extremely dense and massive molecular cloud
with slow motion with respect to the ambient medium for an extended period of
time. This provides a novel, yet challenging channel for the formation of
massive stellar-mass black holes. We discuss how this channel may account for
the massive binary black hole merger system GW190521 as observed by LIGO/Virgo
gravitational wave detectors as well as the claimed massive black hole
candidate LB-1.
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