Celestial-body focused dark matter annihilation throughout the Galaxy

@inproceedings{Leane2021CelestialbodyFD,
  title={Celestial-body focused dark matter annihilation throughout the Galaxy},
  author={Rebecca K. Leane and Tim Linden and Payel Mukhopadhyay and Natalia Toro},
  year={2021}
}
Indirect detection experiments typically measure the flux of annihilating dark matter (DM) particles propagating freely through galactic halos. We consider a new scenario where celestial bodies “focus” DM annihilation events, increasing the efficiency of halo annihilation. In this setup, DM is first captured by celestial bodies, such as neutron stars or brown dwarfs, and then annihilates within them. If DM annihilates to sufficiently long-lived particles, they can escape and subsequently decay… 

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References

SHOWING 1-10 OF 168 REFERENCES
Phenomenology of dark matter annihilation into a long-lived intermediate state
We propose a scenario where Dark Matter (DM) annihilates into an intermediate state which travels a distance ? ? v/? on the order of galactic scales and then decays to Standard Model (SM) particles.
Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays
A possible hint of dark matter annihilation has been found in Cuoco, Korsmeier and Kramer (2017) from an analysis of recent cosmic-ray antiproton data from AMS-02 and taking into account cosmic-ray
Dark matter capture in celestial objects: improved treatment of multiple scattering and updated constraints from white dwarfs
We revisit dark matter (DM) capture in celestial objects, including the impact of multiple scattering, and obtain updated constraints on the DM-proton cross section using observations of white
Dark matter capture in celestial objects: light mediators, self-interactions, and complementarity with direct detection
We generalize the formalism for DM capture in celestial bodies to account for arbitrary mediator mass, and update the existing and projected astrophysical constraints on DM-nucleon scattering cross
A SEARCH FOR DARK MATTER ANNIHILATION WITH THE WHIPPLE 10 m TELESCOPE
We present observations of the dwarf galaxies Draco and Ursa Minor, the Local Group galaxies M32 and M33, and the globular cluster M15 conducted with the Whipple 10 m gamma-ray telescope to search
Dark matter in the Sun: scattering off electrons vs nucleons
The annihilation of dark matter (DM) particles accumulated in the Sun could produce a flux of neutrinos, which is potentially detectable with neutrino detectors/telescopes and the DM elastic
Warming nuclear pasta with dark matter: kinetic and annihilation heating of neutron star crusts
Neutron stars serve as excellent next-generation thermal detectors of dark matter, heated by the scattering and annihilation of dark matter accelerated to relativistic speeds in their deep
Heating up neutron stars with inelastic dark matter
Neutron stars can provide new insight into dark matter properties, as these dense objects capture dark matter particles very efficiently. It has recently been shown that the energy transfer in the
On the capture of dark matter by neutron stars
We calculate the number of dark matter particles that a neutron star accumulates over its lifetime as it rotates around the center of a galaxy, when the dark matter particle is a self-interacting
...
...