Neutrino point source searches for dark matter spikes
2022 (English)In: Journal of Cosmology and Astroparticle Physics, E-ISSN 1475-7516, Vol. 2022, no 08, p. 065-, article id 065Article in journal (Refereed) Published
Abstract [en]
Any dark matter spikes surrounding black holes in our Galaxy are sites of signif-icant dark matter annihilation, leading to a potentially detectable neutrino signal. In this paper we examine 10 - 105M (R) black holes associated with dark matter spikes that formed in early minihalos and still exist in our Milky Way Galaxy today, in light of neutrino data from the ANTARES [1] and IceCube [2] detectors. In various regions of the sky, we determine the minimum distance away from the solar system that a dark matter spike must be in order to have not been detected as a neutrino point source for a variety of representative dark matter annihilation channels. Given these constraints on the distribution of dark matter spikes in the Galaxy, we place significant limits on the formation of the first generation of stars in early minihalos - stronger than previous limits from gamma-ray searches in Fermi Gamma -Ray Space Telescope data. The larger black holes considered in this paper may arise as the remnants of Dark Stars after the dark matter fuel is exhausted; thus neutrino observations may be used to constrain the properties of Dark Stars. The limits are particularly strong for heavier WIMPs. For WIMP masses ti 5 TeV, we show that & LE; 10% of minihalos can host first stars that collapse into BHs larger than 103M (R).
Place, publisher, year, edition, pages
IOP Publishing , 2022. Vol. 2022, no 08, p. 065-, article id 065
Keywords [en]
dark matter theory, neutrino detectors, first stars, massive black holes
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-321050DOI: 10.1088/1475-7516/2022/08/065ISI: 000864093400010Scopus ID: 2-s2.0-85138154166OAI: oai:DiVA.org:kth-321050DiVA, id: diva2:1708546
Note
QC 20221104
2022-11-042022-11-042023-09-25Bibliographically approved