Neutrinos from the gamma-ray source eHWC J1825-134: Predictions for detectors

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 show how the Fermi-LAT data could help in providing a morphology information on the source region. We conclude that, considering a neutrino energy threshold around 10 TeV, about a four to five sigma detection has to be expected after ten years of observations, depending on the details of the considered scenario. Finally, we also consider the case in which the emission from the HWC J1825-134 source is only partially hadronic and show that in 20 years of running time a three sigma detection is feasible.