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arXiv · 2209.00064

A Lower Bound on the Mass of Compact Objects from Dissipative Dark Matter

James Gurian·Michael Ryan·Sarah Schon·Donghui Jeong·Sarah Shandera
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Abstract

We study the minimum mass of dark compact objects formed in dissipative dark-matter halos and show that the simple atomic-dark-matter model consistent with all current observations can create low-mass fragments that can evolve into compact objects forbidden by stellar astrophysics. We model the collapse of the dark halo's dense core by tracing the thermo-chemical evolution of a uniform-density volume element under two extreme assumptions for density evolution: hydrostatic equilibrium and pressure-free collapse. We then compute the opacity-limited minimum fragment mass from the minimum temperature achieved in these calculations.

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James Gurian, Michael Ryan, Sarah Schon, Donghui Jeong, Sarah Shandera. 2022-08-31. A Lower Bound on the Mass of Compact Objects from Dissipative Dark Matter. https://doi.org/10.3847/2041-8213%2Fac997c

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