Galactic diffuse gamma-ray flux at the energy about 175 TeV
Romen M. Martirosov, Samvel V. Ter-Antonyan, Anatoly D. Erlykin,, Alexandr P. Garyaka, Natalya M. Nikolskaya, Yves A. Gallant, Lawrence W., Jones
TL;DR
This paper reports an upper limit measurement of the galactic diffuse gamma-ray flux at approximately 175 TeV using the GAMMA experiment, providing constraints on high-energy gamma-ray emission from our galaxy.
Contribution
First measurement of an upper limit on galactic diffuse gamma-ray flux at 175 TeV using muon-poor air shower selection at mountain level.
Findings
Upper limit for differential flux at 175 TeV: (5.8-7.0)x10^-12 erg m^-2 s^-1 sr^-1
Measurement constrains models of galactic gamma-ray emission at very high energies
Method demonstrates effectiveness of muon-poor air shower selection at high altitude
Abstract
We present an upper limit of galactic diffuse gamma-ray flux, measured with the GAMMA experiment at energy about 175 TeV. The results were obtained using selection of muon poor extensive air showers at mountain level (700 g/cm^2, Mt. Aragats, Armenia) for 5 GeV muon energy threshold. An upper limit for the differential flux at energy E=175+/-25 TeV is equal to (5.8-7.0)x10^-12 [erg m^2 s sr]^-1 for 95% confidence level.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Dark Matter and Cosmic Phenomena · Gamma-ray bursts and supernovae