{ "id": "2404.11676", "version": "v1", "published": "2024-04-17T18:17:48.000Z", "updated": "2024-04-17T18:17:48.000Z", "title": "Supermassive black holes from runaway mergers and accretion in nuclear star clusters", "authors": [ "Konstantinos Kritos", "Emanuele Berti", "Joseph Silk" ], "comment": "4 pages, 3 figures", "categories": [ "astro-ph.HE", "gr-qc" ], "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.", "revisions": [ { "version": "v1", "updated": "2024-04-17T18:17:48.000Z" } ], "analyses": { "keywords": [ "supermassive black holes", "runaway mergers", "nuclear star cluster scenario", "dense nuclear star clusters", "high-redshift extreme mass-ratio inspirals" ], "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable" } } }