Evidence for TeV gamma ray emission from Cassiopeia A
Open Access
- 15 April 2001
- journal article
- research article
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 370 (1) , 112-120
- https://doi.org/10.1051/0004-6361:20010243
Abstract
232 hours of data were accumulated from 1997 to 1999, using the HEGRA Stereoscopic Cherenkov Telescope System to observe the supernova remnant Cassiopeia A. TeV γ-ray emission was detected at the level, and a flux of above 1 TeV was derived. The spectral distribution is consistent with a power law with a differential spectral index of between 1 and 10 TeV. As this is the first report of the detection of a TeV γ-ray source on the "centi-Crab"scale, we present the analysis in some detail. Implications for the acceleration of cosmic rays depend on the details of the source modeling. We discuss some important aspects in this paper.Keywords
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This publication has 20 references indexed in Scilit:
- TeV gamma rays expected from supernova remnants in different uniform interstellar mediaAstroparticle Physics, 2000
- The Energy Spectrum of TeV Gamma Rays from the Crab Nebula as Measured by the HEGRA System of Imaging Air Cerenkov TelescopesThe Astrophysical Journal, 2000
- The future of GeV-TeV γ-ray astrophysics: Highlights of “Towards a Major atmospheric Cherenkov Telescope VI” workshopAIP Conference Proceedings, 2000
- Comparison of techniques to reconstruct VHE gamma-ray showers from multiple stereoscopic Cherenkov imagesAstroparticle Physics, 1999
- X-Ray Variability from the Compact Source in the Supernova Remnant RCW 103The Astrophysical Journal, 1999
- Evidence of X-Ray Synchrotron Emission from Electrons Accelerated to 40 T[CLC]e[/CLC]V in the Supernova Remnant Cassiopeia AThe Astrophysical Journal, 1997
- Kinetic theory of cosmic rays and gamma rays in supernova remnants. I. Uniform interstellar mediumAstroparticle Physics, 1997
- EGRET Observations of Radio-bright Supernova RemnantsThe Astrophysical Journal, 1996
- Point source search techniques in ultra high energy gamma ray astronomyNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1993
- New clues to the Cassiopeia A supernova progenitorThe Astrophysical Journal, 1991