Neutrinos from the gamma-ray source eHWC J1825-134: predictions for Km$^3$ detectors

TL;DR

This paper predicts that the gamma-ray source eHWC J1825-134 could be detected as a neutrino source by the KM3NeT detector within ten years, with a significance of 4 to 5 sigma.

Contribution

It provides the first detailed prediction of neutrino detection prospects for the luminous gamma-ray source eHWC J1825-134 using KM3NeT.

Findings

Approximately 4-5 sigma detection significance after ten years.

Detection prospects depend on the source's spectral and flux characteristics.

eHWC J1825-134 is a promising neutrino source for KM3NeT.

Abstract

The eHWC J1825-134 source is located in the southern sky and has been recently detected by the HAWC observatory. It presents an hard spectral index and its gamma-ray flux extends up to energies close to 100 TeV without significant suppression. Amongst the HAWC sources, it is the most luminous in the multi-TeV domain and therefore is one of the first that should be searched for with a neutrino telescope in the northern hemisphere. Using an updated effective area for the forthcoming KM3NeT detector, we study the possibility to detect this source within ten years of its running time. We conclude that about a 4 to 5 sigma detection has to be expected after ten years of observations, depending on the details of the considered scenario.