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Multiscatter stellar capture of dark matter
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Multiscatter stellar capture of dark matter
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Dark matter may be discovered through its capture in stars and subsequent annihilation. It is usually assumed that dark matter is captured after a single scattering event in the star, however this assumption breaks down for heavy dark matter, which requires multiple collisions with the star to lose enough kinetic energy to become captured. We analytically compute how multiple scatters alter the capture rate of dark matter and identify the parameter space where the affect is largest. Using these results, we then show how multiscatter capture of dark matter on compact stars can be used to probe heavy ($m_X >$ TeV) dark matter with remarkably small dark matter-nucleon scattering cross-sections. As one example, it is demonstrated how measuring the temperature of old neutron stars in the Milky Way's center provides sensitivity to high mass dark matter with dark matter-nucleon scattering cross-sections smaller than the xenon direct detection neutrino floor.
Forward citations
Cited by 12 Pith papers
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Neutron stars can shine a light on elusive lepton-flavor-violating dark matter
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Probing Heavy Dark Matter in Red Giants
Red-giant luminosity observations at the tip of the branch are used to set upper limits on dark-matter masses near 10^11 GeV and spin-independent cross sections near 10^{-37} cm² by requiring that DM-induced core heat...
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High-Energy Neutrinos from Black Hole Evaporation in Neutron Stars
Dark matter collapsing inside neutron stars could repeatedly form microscopic black holes whose Hawking evaporation produces a detectable high-energy neutrino flux concentrated toward the Galactic Center.
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High-Energy Neutrinos from Black Hole Evaporation in Neutron Stars
Repeated collapse of asymmetric dark matter inside neutron stars into evaporating microscopic black holes can produce a Galactic-Center-concentrated high-energy neutrino flux at the 10^-12 GeV cm^-2 s^-1 level, subdom...
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Exact Solution of the Non-minimally Coupled Klein-Gordon Equation in the Schwarzschild Star
Exact solution of non-minimally coupled massive Klein-Gordon equation in Schwarzschild star metric expressed via general Heun function after geometry-induced coordinate transformation.
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Constraints and Projections for Millicharged Dark Matter in the Sun with Water Cherenkov Neutrino Detectors
Super-Kamiokande constrains millicharged dark matter at 5-28 GeV for fractional abundance 10^{-4.5}; Hyper-Kamiokande reaches down to 5x10^{-6}.
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Probing freeze-in dark matter using Bose-Einstein condensate in neutron star
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Dark Matter Capture in Supernovae Modifies Dark Photon Cooling Bounds
Asymmetric dark matter captured in SN progenitors can form a 'dark photosphere' that traps dark photons and reopens SN1987A-excluded parameter space.
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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.
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Muonphilic asymmetric dark matter at a future muon collider
Muonphilic portals to fermionic asymmetric dark matter are constrained by existing data and can be probed further by 3 and 10 TeV muon colliders.
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Neutron stars as thermometers for reheating induced dipole dark matter
Dipole dark matter produced by freeze-out or freeze-in, including entropy dilution from reheating, can be probed via neutron star heating due to momentum-dependent electromagnetic interactions.
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Thermal emission from dark matter-heated neutron stars in the Galactic Center
DM-heated neutron stars in the Galactic Center reach equilibrium temperatures of 10^4-10^6 K but their emission is below detection thresholds due to extinction.
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