Discovery of gamma-ray emission from the supernova remnant Kes 17 with Fermi Large Area Telescope
Wu, J. H. K. · Wu, E. M. H. · Hui, C. Y. · Tam, P. H. T. · Huang, R. H. H. · Kong, A. K. H. · Cheng, K. S.
Original · EN
We report the discovery of GeV emission at the position of supernova remnant Kes 17 by using the data from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. Kes 17 can be clearly detected with a significance of 12 sigma in the 1 - 20 GeV range. Moreover, a number of gamma-ray sources were detected in its vicinity. The gamma-ray spectrum of Kes 17 can be well described by a simple power-law with a photon index of 2.4. Together with the multi-wavelength evidence for its interactions with the nearby molecular cloud, the gamma-ray detection suggests that Kes 17 is a candidate acceleration site for cosmic-rays.
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