Dark Matter Capture in the First Stars: a Power Source and Limit on Stellar Mass

Abstract

The annihilation of weakly interacting massive particles can provide an important heat source for the first (Pop. III) stars, potentially leading to a new phase of stellar evolution known as a "Dark Star". When dark matter (DM) capture via scattering off of baryons is included, the luminosity from DM annihilation may dominate over the luminosity due to fusion, depending on the DM density and scattering cross-section. The influx of DM due to capture may thus prolong the lifetime of the Dark Stars. Comparison of DM luminosity with the Eddington luminosity for the star may constrain the stellar mass of zero metallicity stars; in this case DM will uniquely determine the mass of the first stars. Alternatively, if sufficiently massive Pop. III stars are found, they might be used to bound dark matter properties.

19 pages, 4 figures, 3 Tables updated captions and graphs, corrected grammer, and added citations revised for submission to JCAP

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Cited by in corpus (27)

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• Comment on "Multiscatter stellar capture of dark matter"
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• Nuclear and dark matter heating in massive white dwarf stars
• Constraining Dark Matter properties with the first generation of stars
• Dark Stars: Improved Models and First Pulsation Results
• Rapidly rotating Population III stellar models as a source of primary nitrogen
• Multicomponent multiscatter capture of Dark Matter
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• Dark Stars Powered by Self-Interacting Dark Matter
• Compatibility of JWST results with exotic halos
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• Constraint on dark matter annihilation with dark star formation using Fermi extragalactic diffuse gamma-ray background data
• Dark Stars and Boosted Dark Matter Annihilation Rates
• Detectability of Supermassive Dark Stars with the Roman Space Telescope
• Analytic Approximations for the Velocity Suppression of Dark Matter Capture
• Stability and pulsation of the first dark stars
• An idea for detecting capture dominated Dark Stars
• Soft Scattering Evaporation of Dark Matter Subhalos by Inner Galactic Gases
• Deep Inelastic Scattering in the Capture of Dark Matter by Neutron Stars
• Dark Stars: Dark Matter in the First Stars leads to a New Phase of Stellar Evolution
• Supermassive Dark Stars and their remnants as a possible solution to three recent cosmic dawn puzzles
• Heavy dark matter in rapidly evolving massive stars
• Dark-Matter-Powered Population III Evolution: Lifetimes, Rotation, and Quasi-Homogeneity in massive Stars
• Constraining Asymmetric DM Properties by Black Hole Formation in Neutron Stars and Population III Stars