Tidal disruption events and dark matter scatterings with neutrinos and photons

Fujiwara, Motoko; Herrera, Gonzalo

doi:10.1016/j.physletb.2024.138573

Physics Letters B

2024

DOI: 10.1016/j.physletb.2024.138573

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Tidal disruption events and dark matter scatterings with neutrinos and photons

Motoko Fujiwara,

Gonzalo Herrera

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2024

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Cited by 2 publications

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Constraining neutrino-DM interactions with Milky Way dwarf spheroidals and supernova neutrinos

Heston,

Horiuchi,

Shirai

2024

Phys. Rev. D

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We constrain the neutrino-dark matter cross section using properties of the dark matter density profiles of Milky Way dwarf spheroidal galaxies. The constraint arises from core-collapse supernova neutrinos scattering on dark matter as a form of energy injection, allowing the transformation of the dark matter density profile from a cusped profile to a flatter profile. We assume a standard cosmology of dark energy and cold, collisionless, and non-self-interacting dark matter. By requiring that the dark matter cores do not lose too much mass or overshoot constraints from stellar kinematics, we place an upper limit on the cross section of σν−DM(Eν=15 MeV,mχ≲130 GeV)≈3.4×10−23 cm2 and σν−DM(Eν=15 MeV,mχ≳130 GeV)≈3.2×10−27(mχ1 GeV)2 cm2, which is stronger than previous bounds for these energies. Consideration of baryonic feedback or host galaxy effects on the dark matter profile can strengthen this constraint. Published by the American Physical Society 2024

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Constraining neutrino-DM interactions with Milky Way dwarf spheroidals and supernova neutrinos

Heston,

Horiuchi,

Shirai

2024

Phys. Rev. D

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Supernova-Neutrino-Boosted Dark Matter from All Galaxies

Lin,

2024

Phys. Rev. Lett.

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It has been recently proposed that the boosted dark matter (BDM) by supernova neutrinos (SNν) from SN1987a or from the next Galactic supernova (SN) can serve as a novel component to probe nonvanishing interaction between dark matter (DM) and the standard model leptons [Y.-H. Lin , and Y.-H. Lin , ]. In this Letter, we extend this concept and evaluate the present-day flux of SNν BDM originated from all galaxies at higher redshifts. We show that by considering this diffuse BDM (DBDM) component, the best sensitivity on the product of the energy-independent DM-ν and DM-electron cross sections, σχνσχe≃O(10−37) cm2 for sub-MeV DM, can be obtained with large-size neutrino experiments such as Super-Kamiokande or Hyper-Kamiokande, surpassing the estimated SNν BDM bound from SN1987a. We also examine the impact due to the presence of DM spikes around the supermassive black holes in galaxies on SNν BDM and DBDM. Our results suggest that both the DBDM and the SNν BDM probes are robust to the uncertain properties of DM spikes, unless the next Galactic SN happens to occur at a location extremely close to or right behind the Galactic Center along the SN line of sight. Published by the American Physical Society 2024

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Tidal disruption events and dark matter scatterings with neutrinos and photons

Cited by 2 publications

References 94 publications

Constraining neutrino-DM interactions with Milky Way dwarf spheroidals and supernova neutrinos

Constraining neutrino-DM interactions with Milky Way dwarf spheroidals and supernova neutrinos

Supernova-Neutrino-Boosted Dark Matter from All Galaxies

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