Method to calculate the neutrino flux from a resolved source of high energy gamma-rays: the case of SNR RX J1713.7-3946

• Published in: Astrophysics and space science Vol. 350; no. 1; pp. 245 - 250
• Main Author: Megna, R.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01-03-2014; Springer Nature B.V
• Subjects: Astrobiology; Astronomy; Astrophysics; Astrophysics and Astroparticles; Cosmology; Fluctuations; Gamma ray astronomy; Gamma rays; Neutrinos; Observations and Techniques; Original Article; Physics; Physics and Astronomy; Space Exploration and Astronautics; Space Sciences (including Extraterrestrial Physics; Gamma rays; SNR RX J1713.7-3946; Supernova remnants; Neutrino astrophysics
• ISSN: 0004-640X; 1572-946X
• DOI: 10.1007/s10509-013-1709-6

In this paper we show how to calculate the neutrino flux from a resolved source of high energy gamma-rays, of which have been measured fluxes and spectral indexes of each of the parts in which has been divided for the observations. For the calculation of the neutrino flux need to know the theoretical photon/neutrino ratios and have to consider the oscillation probability of neutrinos. As a numerical example the case of the Supernova Remnant RX J1713.7-3946 observed by H.E.S.S. experiment is presented here. Gamma-rays up to tens of TeV have been observed from RX J1713.7-3946, making this source a possible site of hadronic interactions and thus a source of neutrinos. The H.E.S.S. experiment observed 14 different regions in RX J1713.7-3946, measuring in each one the gamma-ray flux and spectral index. The technique presented in this paper can be applied to other high energy astrophysical sources, point-like or resolved.