PeV Neutrinos from Local Magnetars

Abstract

The paper estimates the flux of PeV neutrinos from magnetar polar caps, assuming that ions/protons are injected, and accelerated in these regions and interact with the radiative background. The present study takes into account the effect of the photon splitting mechanisms that should modify the radiative background, and enhance the neutrino flux at PeV energies, with a view to explain the PeV neutrino events detected in IceCube. The results indicate that in near future, a possibility of any significant excess of neutrino events from a magnetar in Milky Way is extremely low.

The galactic contribution to IceCube's astrophysical neutrino flux

“…The best fit power law to the total astrophysical signal is E 2 Φ(E) = 2.46 ± 0.8 × It may be difficult to have enough energetics in our own Galaxy to reach the PeV portion of the observed spectrum [30,65]. With this in mind, we considered the additional cut L gal|astro,i = 0 for E ν,i > 900 TeV.…”