Mergers as a Probe of Particle Dark Matter

Abstract

Black holes below Chandrasekhar mass limit (1.4 $M_{\odot }$) can not be produced via any standard stellar evolution. Recently, gravitational wave experiments have also discovered unusually low mass black holes whose origin is yet to be known. We propose a simple yet novel formation mechanism of such low mass black holes. Non-annihilating particle dark matter, owing to their interaction with stellar nuclei, can gradually accumulate inside compact stars, and eventually swallows them to low mass black holes, ordinarily impermissible by the Chandrasekhar limit. We point out several avenues to test this proposal, concentrating on the cosmic evolution of the binary merger rates.

v2: 8 pages, 2 figures. Published in SciPost Physics Proceedings: 14th International Conference on Identification of Dark Matter (IDM) 2022

References in corpus (16)

• Cosmic Star Formation History
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• Observation of gravitational waves from two neutron star-black hole coalescences
• The merger rate of primordial-black-hole binaries
• Constraining Asymmetric Dark Matter through observations of compact stars
• Cosmology with the lights off: Standard sirens in the Einstein Telescope era
• A Horizon Study for Cosmic Explorer: Science, Observatories, and Community
• New Analysis of Neutron Star Constraints on Asymmetric Dark Matter
• Low Mass Black Holes from Dark Core Collapse
• Nucleon Structure and Strong Interactions in Dark Matter Capture in Neutron Stars
• Improved Treatment of Dark Matter Capture in Neutron Stars II: Leptonic Targets
• Comment on "Multiscatter stellar capture of dark matter"
• Accretion onto a small black hole at the center of a neutron star
• Neutron Star Quantum Death by Small Black Holes
• Neutron Stars Harboring a Primordial Black Hole: Maximum Survival Time
• Accretion onto black holes inside neutron stars with piecewise-polytropic equations of state: analytic and numerical treatments