ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Low Mass Black Holes from Dark Core Collapse

Dasgupta, B and Laha, R and Ray, A (2021) Low Mass Black Holes from Dark Core Collapse. In: Physical Review Letters, 126 (14).

phy_rev_let_126-14_2021.pdf - Published Version

Download (693kB) | Preview
Official URL: https://doi.org/10.1103/PhysRevLett.126.141105


Unusual masses of black holes being discovered by gravitational wave experiments pose fundamental questions about the origin of these black holes. Black holes with masses smaller than the Chandrasekhar limit �1.4 M are essentially impossible to produce through stellar evolution. We propose a new channel for production of low mass black holes: stellar objects catastrophically accrete nonannihilating dark matter, and the small dark core subsequently collapses, eating up the host star and transmuting it into a black hole. The wide range of allowed dark matter masses allows a smaller effective Chandrasekhar limit and thus smaller mass black holes. We point out several avenues to test our proposal, focusing on the redshift dependence of the merger rate. We show that redshift dependence of the merger rate can be used as a probe of the transmuted origin of low mass black holes. © 2021 authors.

Item Type: Journal Article
Publication: Physical Review Letters
Publisher: American Physical Society
Additional Information: The copyright for this article belongs to Authors
Keywords: Dark Matter; Galaxies; Gravity waves; Merging; Red Shift; Stars, Black holes; Core collapse; Host-stars; Low mass; New channels; Stellar evolutions, Gravitation
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 11 Aug 2021 07:48
Last Modified: 11 Aug 2021 07:48
URI: http://eprints.iisc.ac.in/id/eprint/69100

Actions (login required)

View Item View Item