Observations of the supernova remnants Cas-A and Tycho with the HEGRA stereoscopic IACT system

Details Observations of the supernova remnants Cas-A and Tycho with the HEGRA stereoscopic IACT system Observations of the supernova remnants Cas-A and Tycho with the HEGRA stereoscopic IACT system

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999icrc....3..492p&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

2

Scientific paper

Recently, young supernova remnants (SNR) from type Ia Supernovae (SNe) have become targets of interest for TeV gamma-ray astronomy. This prompted the HEGRA collaboration to extensively observe Tycho's SNR in 1997 and 1998 with its stereoscopic IACT system. The HEGRA IACT system was also used to observe the young SNR Cas-A. Although considered to be the result of a SN type Ib, the detected strong nonthermal X-ray emission makes this SNR a promising candidate for TeV gamma-ray emission. Given the spatial resolution of the system, both sources are still nearly pointlike. Therefore, the data samples yield an emission sensitivity close to a few percent of the Crab flux. The Cas-A observations reveal evidence for a TeV signal.

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