Observations of Supernova Remnants with VERITAS

Details Observations of Supernova Remnants with VERITAS Observations of Supernova Remnants with VERITAS

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21360401h&link_type=abstract

American Astronomical Society, AAS Meeting #213, #604.01

Astronomy and Astrophysics

Astronomy

Scientific paper

Supernova remnants (SNRs) are widely considered to be the strongest candidate for the source of cosmic rays below the knee around 3×1015 eV. In the last few years, TeV gamma-ray observations of SNRs have opened a new window on the high-energy processes occurring in their shock fronts. VERITAS, an array of four gamma-ray telescopes located at the Whipple Observatory in southern Arizona, has an active program of SNR observations. Recent results include a confirmation of TeV gamma-ray emission from Cassiopeia A and the co-discovery (along with MAGIC) of TeV emission from IC 443. In the case of IC 443, the emission appears coincident in space with the site of interaction between the expanding shell of the SNR and a nearby molecular cloud. These results and their implications for the nature of the cosmic rays - hadronic or electronic - accelerated in the remnants will be discussed.

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