An interacting molecular cloud scenario for production of gamma-rays and neutrinos from MAGIC J1835-069, and MAGIC J1837-073

TL;DR

This paper models gamma-ray and neutrino emissions from specific galactic sources using hadronic interactions of cosmic rays with ambient matter, predicting future detections by gamma-ray and neutrino telescopes.

Contribution

It presents a novel interpretation of gamma-ray emissions from MAGIC J1835-069 and MAGIC J1837-073 as hadronic interactions involving cosmic rays and molecular clouds, and forecasts neutrino detection prospects.

Findings

Gamma-ray emissions explained by hadronic interactions of cosmic rays with ambient matter.

MAGIC J1837-073 likely produced by runaway cosmic rays from PWN HESS J1837-069 interacting with a molecular cloud.

HESS J1837-069 should be detectable by IceCube Gen-2 neutrino telescope within a few years.

Abstract

Recently the MAGIC telescope observed three TeV gamma-ray extended sources in the galactic plane in the neighborhood of radio SNR G24.7+0.6. Among them, the PWN HESS J1837-069 was detected earlier by the HESS observatory during its first galactic plane survey. The other two sources, MAGIC J1835-069 and MAGIC J1837-073 are detected for the first time at such high energies. Here we shall show that the observed gamma-rays from the SNR G24.7+0.6 and the HESS J1837-069 can be explained in terms of hadronic interactions of the PWN/SNR accelerated cosmic rays with the ambient matter. We shall further demonstrate that the observed gamma-rays from the MAGIC J1837$-$073 can be interpreted through hadronic interactions of runaway cosmic-rays from PWN HESS J1837-069 with the molecular cloud at the location of MAGIC J1837-073. No such association has been found between MAGIC J1835$-$069 and SNR G24.7+0.6 or PWN HESS J1837$-$069. We have examined the maximum energy attainable by cosmic-ray particles in the SNR G24.7+0.6/ PWN HESS J1837-069 and the possibility of their detection with future gamma-ray telescopes. The study of TeV neutrino emissions from the stated sources suggests that the HESS J1837$-$069 should be detected by IceCube Gen-2 neutrino telescope in a few years of observation.