Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.635l&link_type=abstract
Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:
Astronomy and Astrophysics
Astrophysics
Scientific paper
We present the results from the search for TeV gamma-rays from several shell-type supernova remnants (SNRs) using the Whipple Observatory's 10 m gamma-ray telescope. The bulk of cosmic rays of up to 100 TeV are believed to be accelerated in supernova shocks. Recent observations of power-law X-ray emission from the SNRs IC 443 and Cassiopeia A have been interpreted as synchrotron radiation of electrons with energies up to 10 and 40 TeV respectively. These electrons should produce detectable gamma-ray fluxes through inverse Compton scattering on soft photon radiation fields. The EGRET instrument on the CGRO has observed GeV gamma-rays from the SNRs IC443, gamma-Cygni and Monoceros which has been interpreted as evidence for nuclear interactions between accelerated protons and local gas. Simple extrapolations of the EGRET spectra to TeV energies also implies detectable fluxes.
Lessard Rodney W.
Whipple Collaboration
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