Direct Detection Constraints on Blazar-Boosted Dark Matter. (arXiv:2111.13644v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Wang_J/0/1/0/all/0/1">Jin-Wei Wang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Granelli_A/0/1/0/all/0/1">Alessandro Granelli</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ullio_P/0/1/0/all/0/1">Piero Ullio</a>
We explore the possibility that relativistic protons in the extremely
powerful jets of blazars may boost via elastic collisions the dark matter
particles in the surroundings of the source to high energies. We concentrate on
two sample blazars, TXS 0506+056 – towards which IceCube recently reported
evidence for a high-energy neutrino flux – and BL Lacertae, a representative
nearby blazar. We find that the dark matter flux at Earth induced by these
sources may be sizeable, larger than the flux associated with the analogous
process of DM boosted by galactic cosmic rays, and relevant to access direct
detection for dark matter particle masses lighter than 1 GeV. From the null
detection of a signal by XENON1T, MiniBooNE, and Borexino, we derive limits on
dark matter-nucleus spin-independent and spin-dependent cross sections which,
depending on the modelization of the source, improve on other currently
available bounds for light DM candidates of one up to five orders of magnitude.
We explore the possibility that relativistic protons in the extremely
powerful jets of blazars may boost via elastic collisions the dark matter
particles in the surroundings of the source to high energies. We concentrate on
two sample blazars, TXS 0506+056 – towards which IceCube recently reported
evidence for a high-energy neutrino flux – and BL Lacertae, a representative
nearby blazar. We find that the dark matter flux at Earth induced by these
sources may be sizeable, larger than the flux associated with the analogous
process of DM boosted by galactic cosmic rays, and relevant to access direct
detection for dark matter particle masses lighter than 1 GeV. From the null
detection of a signal by XENON1T, MiniBooNE, and Borexino, we derive limits on
dark matter-nucleus spin-independent and spin-dependent cross sections which,
depending on the modelization of the source, improve on other currently
available bounds for light DM candidates of one up to five orders of magnitude.
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