Discovery of GeV Gamma-ray Emission from the Galactic Supernova Remnant Kes 41

Authors : Tülün ERGİN, Lab SAHA, Pratik MAJUMDAR

Pages : 389-390

View : 18 | Download : 8

Publication Date : 2020-12-11

Article Type : Conference Paper

Abstract :We present the discovery of gamma-ray emission of the mixed-morphology supernova remnant insert ignore into journalissuearticles values(SNR); G337.8$-$0.1 insert ignore into journalissuearticles values(Kes 41); in the energy range of 0.2 $-$ 300 GeV using the data from Large Area Telescope on board of Fermi Gamma-ray Space Telescope insert ignore into journalissuearticles values({\it Fermi}-LAT);. SNR shocks interacting with molecular clouds are the best sites to search for the `hadronic` origin of the gamma-ray emission and the acceleration processes of high-energy particles. There is multi-wavelength evidence for interactions of Kes 41 with a nearby molecular cloud suggesting that it may be a site for cosmic-ray acceleration. In this paper, we present the gamma-ray analysis using the {\it Fermi}-LAT data of $\sim$6 years, where we try to disentangle the complex morphology of the neighborhood of Kes 41. We report the detection of Kes 41 at a significance of $\sim$21$\sigma$ and a new closeby source insert ignore into journalissuearticles values($\sim$31$\sigma$);, as well as give preliminary results of the extension measurements.
Keywords : supernova remnants, compact objects, galaxies general