The X-ray structure of supernova remnants. I - Cassiopeia A

Details The X-ray structure of supernova remnants. I - Cassiopeia A The X-ray structure of supernova remnants. I - Cassiopeia A

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.178..307c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 178, Feb. 1977, p. 307-323. Research supported by the Science Research

Astronomy and Astrophysics

Astronomy

13

Astronomical Maps, Astronomical Models, Cassiopeia A, Supernova Remnants, X Ray Astronomy, Error Analysis, Oao 3, Radiant Flux Density, Radio Astronomy, Shock Wave Interaction

Scientific paper

Copernicus observations of the supernova remnant Cas A have been reanalyzed using an algebraic reconstruction technique (ART) to investigate further the X-ray structure of the source on a scale of 3 arcmin. This structure contains certain features similar to those observed at radio wavelengths with a comparable beam size. Additional X-ray observations through a 1.7-arcmin aperture confirm the main features of the ART X-ray map. The reliability and accuracy of the reconstruction technique are examined in detail. The spatial inhomogeneity and high X-ray luminosity of Cas A may be due to the blast wave interacting with matter ejected prior to the supernova explosion. Alternatively, a 'reverse' shock may be heating material ejected in the supernova itself.

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