Fermi LAT Observations of Supernova Remnants Interacting with Molecular Clouds

Abstract

We report the detection of gamma-ray emission coincident with four supernova remnants (SNRs) using data from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. G349.7+0.2, CTB 37A, 3C 391 and G8.7-0.1 are supernova remnants known to be interacting with molecular clouds, as evidenced by observations of hydroxyl (OH) maser emission at 1720 MHz in their directions. SNR shocks are expected to be sites of cosmic rays acceleration, and clouds of dense material can provide effective targets for production of gamma-rays from pion-decay. The observations reveal unresolved sources in the direction of G349.7+0.2, CTB 37A and 3C 391, and a possibly extended source coincident with G8.7-0.1, all with significance levels greater than 10 sigma.

8 pages, 8 figures, 2 tables, accepted for publication in ApJ

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Cited by in corpus (87)

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• A Statistical Approach to Recognizing Source Classes for Unassociated Sources in the First Fermi-LAT Catalog
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• Fermi-LAT Discovery of GeV Gamma-ray Emission from the Vicinity of SNR W44
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• Fermi Large Area Telescope Observations of the Supernova Remnant G8.7-0.1
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• Evolution of high-energy particle distribution in Supernova Remnants
• Gamma-ray emission of accelerated particles escaping a supernova remnant in a molecular cloud
• Particle Spectra from Acceleration at Forward and Reverse Shocks of Young Type Ia Supernova Remnants
• Gamma Rays from Cosmic Rays in Supernova Remnants
• Unified model for the gamma-ray emission of supernova remnants
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• A Broadband Study of the Emission from the Composite Supernova Remnant MSH 11-62
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• Fermi-LAT Observations and A Broadband Study of Supernova Remnant CTB 109
• Understanding hadronic gamma-ray emission from supernova remnants
• Fermi-LAT Observation of Supernova Remnant S147
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• Fermi Large Area Telescope Detection of Supernova Remnant RCW 86
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• H.E.S.S. detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud
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• Prediction of the diffuse neutrino flux from cosmic ray interactions near Supernova Remnants
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• High Energy Cosmic-ray Diffusion in Molecular Clouds: A Numerical Approach
• Supernova Remnant Kes 17: Efficient Cosmic Ray Accelerator inside a Molecular Cloud
• Cosmic Ray Studies with the Fermi Gamma-ray Space Telescope Large Area Telescope
• Evidence for Cosmic-Ray Escape in the Small Magellanic Cloud using Fermi Gamma-rays
• Recombining Plasma in the Gamma-ray Emitting Mixed-Morphology Supernova Remnant 3C 391
• GeV γ-ray Emission Detected by Fermi-LAT Probably Associated with the Thermal Composite Supernova Remnant Kesteven 41 in a Molecular Environment
• The X-ray Properties of Five Galactic Supernova Remnants Detected by the Spitzer GLIMPSE Survey
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• Interstellar gas towards CTB 37A and the TeV gamma-ray source HESS J1714-385
• Exploring the dark accelerator HESS J1745-303 with Fermi Large Area Telescope
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• The likely Fermi Detection of the Supernova Remnant RCW 103
• Cosmic Ray Acceleration in Supernova Remnants
• {\it Suzaku} observation of Galactic supernova remnant CTB 37A (G348.5+0.1)
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