Searching for dark-matter induced neutrino signals in dwarf spheroidal galaxies using 10 years of IceCube public data
arXiv:2306.02675 · doi:10.1103/PhysRevD.108.043001
Abstract
This study searches for neutrino signals from 18 dwarf spheroidal galaxies (dSphs) using 10 years of publicly available muon-track data of the IceCube neutrino observatory. We apply an unbinned likelihood analysis on each of these dSphs to derive the significance the putative neutrino emission. To further enhance our sensitivity, we also stack all dSphs together to perform a joint analysis. However, no significant neutrino emission signal was detected in either the single-source or stacking analysis. Based on these null results, we derive constraints on the annihilation cross section of dark matter particles. Compared to the existing literature, our constraints via the channel are comparable to the ones from the VERITAS observations of dSphs.
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