TeV Neutrinos from SuperNova Remnants embedded in Giant Molecular Clouds

Abstract

The recent detection of $\gamma$-rays with energy up to 10 TeV from dense regions surrounding some Supernova Remnants (SNR) provides strong, though still not conclusive, evidence that the nucleonic component of galactic Cosmic Rays is accelerated in the supernova outflows. Neutrino telescopes could further support the validity of such scenario by detecting neutrinos coming from the same regions. We re-evaluate the TeV range neutrino-photon flux ratio to be expected from pion decay, finding small differences respect to previous derivations. We apply our results and the recent HESS measurements of the very high energy $\gamma$-ray flux from the molecular cloud complex in the Galactic Centre, to estimate the neutrino flux from that region discussing the detectability perspectives for Mediterranean Neutrino Telescopes. We also discuss under which conditions neutron decay may give rise to a significant TeV antineutrino flux from a SNR embedded in Molecular Cloud complexes.

19 pages, 1 figure. Added one reference. Accepted by Astroparticle Physics

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• The gamma-ray and neutrino sky: A consistent picture of Fermi-LAT, Milagro, and IceCube results
• First combined search for neutrino point-sources in the Southern Hemisphere with the ANTARES and IceCube neutrino telescopes
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• TeV gamma-rays and neutrinos from photo-disintegration of nuclei in Cygnus OB2
• Diffuse Neutrino and Gamma-ray Emissions of the Galaxy above the TeV
• The GeV to TeV connection in the environment of SNR IC 443
• Simulating the Galactic Multi-messenger Emissions with HERMES
• Lowering IceCube's Energy Threshold for Point Source Searches in the Southern Sky
• Neutrinos from Cosmic Ray Accelerators in the Cygnus Region of the Galaxy
• Search for Sources of High Energy Neutrons with Four Years of Data from the IceTop Detector
• Probing the cosmic ray mass composition in the knee region through TeV secondary particle fluxes from solar surroundings
• Interpretation of astrophysical neutrinos observed by IceCube experiment by setting Galactic and extra-Galactic spectral components
• Gamma-ray and neutrino diffuse emissions of the Galaxy above the TeV