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arXiv · 2404.04827

Dark Matter-Induced Low-Mass Gap Black Hole Echoing LVK Observations

Shuailiang Ge·Yuxin Liu·Jing Shu·Yue Zhao
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Abstract

The recent detection of gravitational waves from a binary merger involving a potential low-mass gap black hole (LMBH) by LIGO-Virgo-KAGRA (LVK) Collaboration motivates investigations into mechanisms beyond conventional stellar evolution theories to account for their existence. We study a mechanism in which dark matter (DM), through its capture and accumulation inside main sequence stars, induces the formation of black holes within the mass range of $[3, 5]M_\odot$. We examine the distribution of these LMBHs as a function of galaxy halo mass, particularly when paired with neutron stars. This gives a distinct signature that can be tested with future gravitational wave observations. We find that a viable portion of the DM parameter space predicts a merger rate of such binaries consistent with LVK observations.

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Shuailiang Ge, Yuxin Liu, Jing Shu, Yue Zhao. 2024-04-07. Dark Matter-Induced Low-Mass Gap Black Hole Echoing LVK Observations. https://arxiv.org/abs/2404.04827

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