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- W2964208001 abstract "We report the current status of the observations of supernova remnants (SNRs) with the LargeArea Telescope (LAT) aboard the Fermi Gamma-ray Space Telescope, focusing on middle-agedSNRs that appear to be interacting with molecular clouds. Observations with the Fermi LAT in anenergy range from 0.2 GeV to ∼100 GeV have unveiled the presence of luminous GeV gamma-ray emission in middle-aged SNRs, providing a new insight into the shock-acceleration theoryand the origin of galactic cosmic rays. The middle-aged SNRsdetected by the Fermi LAT aregenerally much brighter in GeV than in TeV in terms of energy fl ux, which emphasizes the im-portanceof the GeV observations. Spectral steepeningin the Fermi-LATbandis commonlyfoundfor the GeV-luminous SNRs. Remarkably, most (if not all) of the GeV-luminous SNRs are knownto be interacting with molecular clouds, and they are also the strong sources of synchrotron radioemission. We discuss possible scenarios to explain the enhanced GeV gamma-ray emission in thecloud-interacting SNRs. Particular emphasis is placed on ascenario in which shock-acceleratedcosmic-rays are adiabatically compressed and energized asresult of radiative cooling behind thecloud shock.25th Texas Symposium on Relativistic AstrophysicsDecember 6-10, 2010Heidelberg, Germany" @default.
- W2964208001 created "2019-07-30" @default.
- W2964208001 creator A5016267866 @default.
- W2964208001 date "2011-06-06" @default.
- W2964208001 modified "2023-10-18" @default.
- W2964208001 title "GeV Gamma-Rays from Supernova Remnants Interacting with Molecular Clouds" @default.
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- W2964208001 doi "https://doi.org/10.22323/1.123.0143" @default.
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