Discovery of gamma-ray emission from the supernova remnant Kes 17 with Fermi Large Area Telescope

Abstract

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.

13 pages, 3 figures, 1 table, accepted for publication in ApJ Letter

References in corpus (14)

• Observations of the Crab Nebula with H.E.S.S
• Observations of the young supernova remnant RX J1713.7-3946 with the Fermi Large Area Telescope
• Fermi LAT Observations of the Supernova Remnant W28 (G6.4-0.1)
• Gamma rays from molecular clouds illuminated by cosmic rays escaping from interacting supernova remnants
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• Evidence For Particle Acceleration to the Knee of the Cosmic Ray Spectrum in Tycho's Supernova Remnant
• Gamma rays from molecular clouds illuminated by accumulated diffusive protons from supernova remnant W28
• AGILE detection of GeV gamma-ray emission from the SNR W28
• Evidence of a Curved Synchrotron Spectrum in the Supernova Remnant SN 1006
• Non-linear weak lensing forecasts
• XMM-Newton detection of the supernova remnant G304.6+0.1 (Kes 17)
• Far-Infrared Luminous Supernova Remnant Kes 17
• Supernova Remnants and GLAST

Cited by in corpus (13)

• Observational signatures of particle acceleration in supernova remnants
• Radio emission from Supernova Remnants
• Constraints on the Galactic Population of TEV Pulsar Wind Nebulae Using Fermi Large Area Telescope Observations
• Unified model for the gamma-ray emission of supernova remnants
• Identification of HESS J1303-631 as a Pulsar Wind Nebula through gamma-ray, X-ray and radio observations
• Fermi Large Area Telescope Detection of Supernova Remnant RCW 86
• High-energy observations of PSR B1259-63/LS 2883 through the 2014 periastron passage: connecting X-rays to the GeV flare
• Supernova Remnant Kes 17: Efficient Cosmic Ray Accelerator inside a Molecular Cloud
• The X-ray Properties of Five Galactic Supernova Remnants Detected by the Spitzer GLIMPSE Survey
• Discovery of recombining plasma from the faintest GeV SNR HB 21 and a possible scenario of the cosmic ray escaping from SNR shocks
• Discovery of Broad Molecular lines and of Shocked Molecular Hydrogen from the Supernova Remnant G357.7+0.3: HHSMT, APEX, Spitzer and SOFIA Observations
• Radio Observations of the Region around the Pulsar Wind Nebula HESS J1303-631 with ATCA
• A deep X-ray observation of supernova remnant G304.6+0.1 (Kes 17) with Suzaku