PoS - Proceedings of Science
Volume 395 - 37th International Cosmic Ray Conference (ICRC2021) - GAI - Gamma Ray Indirect
Gamma-ray Observation of SNR G106.3+2.7 with the Tibet Air Shower Array
M. Ohnishi*  on behalf of the Tibet ASgamma Collaboration
Full text: pdf
Pre-published on: July 06, 2021
Published on: March 18, 2022
We report the observation of gamma-ray emission from the supernova remnant G106.3+2.7 in the 100 TeV energy region with the Tibet air shower array combined with the muon detector array. The gamma-ray emission is detected at a significance of 6.1σ above 10 TeV. The centroid of the gamma-ray emission, situated 0.44◦ away from the pulsar PSR J2229+6114 at the north-east corner of G106.3+2.7, is found to be coincident with the location of a molecular cloud. This morphological feature favors a hadronic origin via the π0 decay caused by accelerated relativistic protons regarding the gamma-ray emission mechanism of G106.3+2.7, over a leptonic one via the inverse-Compton scattering by relativistic electrons. The differential gamma-ray energy spectrum can be expressed by a single power law from 6 TeV to 115 TeV as dN/dE = N0(E/40 TeV)−Γ with a flux of N0 = (9.5±1.6)×10−16 [cm−2 s−1 TeV−1] and an index of Γ = 2.95±0.17. In the hadronic scenario, we estimate the cut-off energy of parent cosmic-ray particles (protons) to be around 0.5 PeV.
DOI: https://doi.org/10.22323/1.395.0882
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.