A sensitivity forecast shows H.E.S.S.-like, CTAO, and SWGO observations could strengthen ALP-photon coupling limits by about an order of magnitude over gamma-ray satellites and probe axion-electron couplings at lower masses.
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Probing axion-like particles through the gamma-ray production from cosmic-ray scattering in the Milky Way dark matter halo
A sensitivity forecast shows H.E.S.S.-like, CTAO, and SWGO observations could strengthen ALP-photon coupling limits by about an order of magnitude over gamma-ray satellites and probe axion-electron couplings at lower masses.