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Astrophysics > High Energy Astrophysical Phenomena
Title: Supermassive black holes from runaway mergers and accretion in nuclear star clusters
(Submitted on 17 Apr 2024)
Abstract: Rapid formation of supermassive black holes occurs in dense nuclear star clusters that are initially gas-dominated. Stellar-mass black hole remnants of the most massive cluster sink into the core, where a massive runaway black hole forms as a consequence of combined effects of repeated mergers and Eddington-limited gas accretion. The associated gravitational-wave signals of high-redshift extreme mass-ratio inspirals are a unique signature of the nuclear star cluster scenario.
Submission history
From: Konstantinos Kritos [view email][v1] Wed, 17 Apr 2024 18:17:48 GMT (1239kb,D)
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