Neutrinos and γ-rays from the Galactic Center Region After H.E.S.S. Multi-TeV Measurements

Abstract

The hypothesis of a PeVatron in the Galactic Center, emerged with the recent γ-ray measurements of H.E.S.S., motivates the search for neutrinos from this source. The effect of γ-ray absorption is studied: at the energies currently probed, the known background radiation fields lead to small effects, whereas it is not possible to exclude large effects due to new IR radiation fields near the very Center. Precise upper limits on neutrino fluxes are derived and the underlying hypotheses are discussed. The expected number of events for ANTARES, IceCube and KM3NeT, based on the H.E.S.S. measurements, are calculated. It is shown that km3-class telescopes in the Northern hemisphere have the potential of observing high-energy neutrinos from this important astronomical object and can check the existence of a hadronic PeV galactic accelerator.

11 pages, 4 figures, 2 tables. Accepted for publication in EPJC

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Cited by in corpus (14)

• Sensitivity of the KM3NeT/ARCA neutrino telescope to point-like neutrino sources
• Diffuse cosmic rays shining in the Galactic center: A novel interpretation of H.E.S.S. and Fermi-LAT gamma-ray data
• Common envelope jets supernovae with a black hole companion as possible high energy neutrino sources
• Sagittarius A* as an Origin of the Galactic PeV Cosmic Rays?
• Estimating the Neutrino Flux from Choked Gamma-Ray Bursts
• Where are Milky Way's Hadronic PeVatrons?
• On the potential of Cherenkov Telescope Arrays and KM3 Neutrino Telescopes for the detection of extended sources
• Spectral signatures of PeVatrons
• Neutrino telescopes and high-energy cosmic neutrinos
• IceCube Neutrinos from Hadronically Powered Gamma-Ray Galaxies
• Using Interstellar Clouds to Search for Galactic PeVatrons: Gamma-ray Signatures from Supernova Remnants
• Prospects for combined analyses of hadronic emission from $\gamma$-ray sources in the Milky Way with CTA and KM3NeT
• Electroweak Dark Matter
• High Energy Emission from the Galactic Center