Updated black-hole formation bounds show Population III stars can constrain bosonic asymmetric dark matter at lower masses than neutron stars when a Bose-Einstein condensate forms.
Dark Matter Capture in the First Stars: a Power Source and Limit on Stellar Mass
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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.
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Constraining Asymmetric DM Properties by Black Hole Formation in Neutron Stars and Population III Stars
Updated black-hole formation bounds show Population III stars can constrain bosonic asymmetric dark matter at lower masses than neutron stars when a Bose-Einstein condensate forms.