Neutrino emission of Fermi supernova remnants

TL;DR

This paper investigates the potential neutrino emissions from Fermi-detected supernova remnants, finding that most are too faint for current detectors, except for a few bright sources like RX J1713.7-3946.

Contribution

It provides the first detailed estimates of neutrino signals from Fermi supernova remnants assuming hadronic gamma-ray origins, assessing detectability with km$^3$ neutrino telescopes.

Findings

Most remnants produce neutrino signals below detection thresholds.

TeV bright sources like RX J1713.7-3946 could be detectable.

Neutrino detection is more promising in the northern hemisphere.

Abstract

The Fermi $\gamma$-ray space telescope reported the observation of several Galactic supernova remnants recently, with the $\gamma$-ray spectra well described by hadronic $pp$ collisions. The possible neutrino emissions from these Fermi detected supernova remnants are discussed in this work, assuming the hadronic origin of the $\gamma$-ray emission. The muon event rates induced by the neutrinos from these supernova remnants on typical km$^3$ neutrino telescopes, such as the IceCube and the KM3NeT, are calculated. The results show that for most of these supernova remnants the neutrino signals are too weak to be detected by the on-going or up-coming neutrino experiment. Only for the TeV bright sources RX J1713.7-3946 and possibly W28 the neutrino signals can be comparable with the atmospheric background in the TeV region, if the protons can be accelerated to very high energies. The northern hemisphere based neutrino telescope might detect the neutrinos from these two sources.