Diffuse flux of ultra-high energy photons from cosmic-ray interactions in the disk of the Galaxy and implications for the search for decaying super-heavy dark matter

When propagating to Earth, UHECRs can interact with the gas in our Milky Way and produce secondary particles including photons. This impact search for UHE photons as we face a diffuse flux of resulting from their propagation. flux, together photon expected GZK interactions, participates which is limiting detection UHE-gamma sources. We present an estimate interactions galaxy above 10 17 eV, using results Pierre Auger Collaboration concerning its composition, two different interstellar density models. also discuss evaluated on SHDM searches, former be considered floor below other signals would overwhelmed. Similarly, neutrino produced during same process evaluated, by accounting mixing.