Search for ≥ 400 GeV gamma-rays from the SNR Cas A with the CAT telescope

Details Search for ≥ 400 GeV gamma-rays from the SNR Cas A with the CAT telescope Search for ≥ 400 GeV gamma-rays from the SNR Cas A with the CAT telescope

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999icrc....3..496g&link_type=abstract

Proceedings of the 26th International Cosmic Ray Conference. August 17-25, 1999. Salt Lake City, Utah, USA. Under the auspices o

Physics

Scientific paper

The recent detection of a hard X-ray component in the supernova remnant Cassiopeia A is interpreted as synchrotron emission from electrons accelerated to energies up to 40 TeV (Allen et al., 1997). It is therefore tempting to consider TeV gamma-ray emission from this object through : i) bremsstrahlung and inverse Compton radiation from electrons and/or ii) 0 production from an associated high energy cosmic ray component hitting surrounding material. Cas A was observed by the CAT imaging Cherenkov telescope during the observing season Aug-Nov 1998. An upper limit to the integral flux above 400 GeV of 0.74x10,11 cm,2 s,1 is derived. This result is used to constrain shock-acceleration models for production of VHE gamma-rays in SNRs.

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