No gamma-ray excess was found toward 31 dwarf irregular galaxies with HAWC, yielding 95% confidence upper limits on dark matter annihilation cross-sections and decay lifetimes in the 1 to 100 TeV mass range.
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Constraints on cross-section and lifetime of dark matter with HAWC Observations of dwarf Irregular galaxies
No gamma-ray excess was found toward 31 dwarf irregular galaxies with HAWC, yielding 95% confidence upper limits on dark matter annihilation cross-sections and decay lifetimes in the 1 to 100 TeV mass range.