Galactic Neutrinos in the TeV to PeV Range

摘要: We study the contribution of Galactic sources to flux astrophysical neutrinos recently observed by IceCube Collaboration. show that in simplest model homogeneous and isotropic cosmic ray diffusion Milky Way diffuse neutrino emission consistent with $\ensuremath{\gamma}$-ray (Fermi-LAT) data (KASCADE, KASCADE-Grande CREAM) is expected account for only 4%\char21{}8% above 60 TeV. Direct from cosmic-ray-gas ($pp$) interactions will require an unusually large average opacity 0.01. On other hand, we find events already probe scenarios via distribution event arrival directions. Based on latter, most can have a limited signal: ($\ensuremath{\lesssim}50%$), quasidiffuse ($\ensuremath{\lesssim}65%$), extended Fermi bubbles ($\ensuremath{\lesssim}25%$) or unidentified TeV ($\ensuremath{\lesssim}25%$). The arguments discussed here leave, at present, dark matter decay unconstrained.