Search for spatial coincidence between IceCube neutrinos and gamma-ray bright red dwarfs

TL;DR

This study investigates whether gamma-ray bright red dwarfs are sources of high-energy neutrinos detected by IceCube, finding no significant spatial correlation and thus ruling out their contribution to the neutrino flux.

Contribution

The paper applies an unbinned maximum likelihood analysis to test for spatial coincidence between neutrinos and red dwarfs, providing the first such search for this specific source class.

Findings

No significant spatial correlation found

Red dwarfs do not contribute to IceCube's diffuse neutrino flux

Sets constraints on red dwarfs as neutrino sources

Abstract

We search for a spatial coincidence between high energy neutrinos detected by the IceCube neutrino detector and ten red dwarfs which have been observed in gamma-rays. For our analysis, we use the unbinned maximum likelihood method to look for a statistically significant excess. We do not find any such spatial association between any of the red dwarfs and Icecube-detected neutrinos. Therefore, we conclude that none of the gamma-ray bright red dwarfs contribute to the diffuse neutrino flux measured by IceCube.