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Galactic Diffuse Neutrino Emission from Sources beyond the Discovery Horizon

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arxiv 2306.17285 v2 pith:LLPIHUIY submitted 2023-06-29 astro-ph.HE

Galactic Diffuse Neutrino Emission from Sources beyond the Discovery Horizon

Antonio Ambrosone , Kathrine M{\o}rch Groth , Enrico Peretti , Markus Ahlers This is my paper
classification astro-ph.HE
keywords emissionsourcesgalacticneutrinodiffuseicecubesignalunresolved
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The IceCube Neutrino Observatory has recently reported strong evidence for neutrino emission from the Galactic plane. The signal is consistent with model predictions of diffuse emission from cosmic ray propagation in the interstellar medium. However, due to IceCube's limited potential of identifying individual neutrino sources, it is also feasible that unresolved Galactic sources could contribute to the signal. We investigate the contribution of this quasi-diffuse emission and show that the observed Galactic diffuse flux at 100 TeV could be dominated by hard emission of unresolved sources. Particularly interesting candidate sources are young massive stellar clusters that have been considered as cosmic-ray PeVatrons. We examine whether this hypothesis can be tested by the upcoming KM3NeT detector or the planned future facility IceCube-Gen2 with about five times the sensitivity of IceCube.

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  1. Modelling Galactic neutrino emission: contributions from massive star clusters and interstellar cosmic rays

    astro-ph.HE 2026-06 unverdicted novelty 7.0

    Computes neutrino template maps from the Galactic Plane including star cluster emission, finding the cluster contribution may be non-negligible and consistent with IceCube best-fit templates.