ν-production in Centaurus A and M87 from γ-ray interactions with the gas and dust at the sources

Abstract

Centaurus A and M87 are the closest galaxies with active galactic nuclei and TeV gamma-ray emission. The existence of such TeV radiation suggests the production of a neutrino flux from the photo- hadronic interactions of the gamma-photons of the active galaxies and their own gas and dust content. Using a simple model of Centaurus A and M87, the corresponding neutrino luminosities at source and their fluxes at Earth were calculated. The neutrino fluxes associated with the aforementioned process resulted to be $E^2{\Phi }_{\nu +\bar{\nu }}<10^{-13}{s}^{-1}GeVc{m}^{-2}$, more than 6 orders of magnitude below the modern upper limits from neutrino telescopes. It will be shown that, at high-energies relevant for neutrino astronomy, these neutrino fluxes are not competitive with those fluxes which could be produced from astrophysical scenarios involving cosmic ray acceleration.

arXiv comment12 pages, Proceedings of the XIII Mexican Workshop on Particles and Fields (Journal of Physics: Conference Series), Leon, Guanajuato, Mexico, 20-26 October, 2011