Entropy dilution from early matter domination reduces the couplings needed for multipolar dark matter to match the observed relic density, reopening regions excluded under radiation domination.
Impact of galactic distributions in celestial capture of dark matter
2 Pith papers cite this work. Polarity classification is still indexing.
2
Pith papers citing it
abstract
Celestial capture of dark matter provides a useful handle for constraining its particulate properties. The capture formalism is sensitive to the phase space distribution of dark matter in the vicinity of the celestial object. This article aims to systematically study the impact of uncertainties and the influence of cosmological simulations on the rate at which dark matter particles are captured inside a variety of celestial objects. Going beyond the framework of the Maxwell-Boltzmann distribution or the standard halo model, we take up pragmatic dark matter velocity distributions motivated by observations or cosmological simulations. Within the limits of the standard halo model, we report a maximum $\sim 20\%$ change in the capture rate. This number can go up to $\sim 200\%$ if dark matter particles within the galactic halo are favored to have an empirical velocity distribution profile when well-resolved and sophisticated cosmological simulations are employed to extract their parametric values.
citation-role summary
method 1
citation-polarity summary
fields
hep-ph 2years
2026 2roles
method 1polarities
use method 1representative citing papers
Observation of neutron stars at 1000-1200 K could constrain asymmetric dark matter self-interaction cross-sections by two orders of magnitude beyond bullet cluster limits.
citing papers explorer
-
Multipolar Dark Matter Freeze-out in an Early Matter-Dominated Universe
Entropy dilution from early matter domination reduces the couplings needed for multipolar dark matter to match the observed relic density, reopening regions excluded under radiation domination.
-
Constraining dark matter self-interaction from kinetic heating in neutron stars
Observation of neutron stars at 1000-1200 K could constrain asymmetric dark matter self-interaction cross-sections by two orders of magnitude beyond bullet cluster limits.