Neutrino yield from Galactic cosmic rays

作者：Kachelriess M^*; Ostapchenko S

来源：PHYSICAL REVIEW D, 2014, 90(8): 083002.

DOI：10.1103/PhysRevD.90.083002

We calculate the neutrino yield from collisions of cosmic ray (CR) nuclei with gas using the event generator QGSJET-II. We present first the general characteristics and numerical results for the neutrino yield assuming power-law fluxes for the primary CR nuclei. Then we use three parametrizations for the Galactic CR flux to derive the neutrino yield for energies around and above the knee. The shape and the normalization of the resulting neutrino flux above similar to 10(14) eV depends on the composition of the Galactic CR flux employed, but is generally dominated by its proton component. The spectral shape and magnitude of the neutrino flux suggest that the IceCube excess is not connected to interactions of Galactic sea CRs.

• 出版日期2014-10-6