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Cored dark matter halos in the cosmic neutrino background

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Title
Cored dark matter halos in the cosmic neutrino background
Author(s)
Cho, Wonsub; Choi, Ki-Young; Hee Jung Kim
Publication Date
2023-07
Journal
Journal of Cosmology and Astroparticle Physics, v.2023, no.07
Publisher
IOP Publishing
Abstract
Abstract We study the impact of the interaction between DM and the cosmic neutrino background on the evolution of galactic dark matter halos. The energy transfer from the cosmic background neutrinos to galactic dark matter can heat the center of the galaxy and make it cored. The core formation is efficient for the small galaxies such as the satellite galaxies of the Milky Way and we can put a conservative constraint on the non-relativistic elastic scattering cross section as  σχν ≲ 10-31 cm2 for 0.1 keV dark matter.
URI
https://pr.ibs.re.kr/handle/8788114/14740
DOI
10.1088/1475-7516/2023/07/013
ISSN
1475-7516
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > 1. Journal Papers (저널논문)
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