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A Lower Bound on the Mass of Compact Objects from Dissipative Dark Matter
- Source :
- ApJL 939 L12 (2022)
- Publication Year :
- 2022
-
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.<br />Comment: 6 pages, 3 figures. Updated figures to reflect a corrected H2 dissociation rate in DarkKROME
- Subjects :
- Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Database :
- arXiv
- Journal :
- ApJL 939 L12 (2022)
- Publication Type :
- Report
- Accession number :
- edsarx.2209.00064
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.3847/2041-8213/ac997c