The X-ray structure of supernova remnants - I. Cassiopeia A.
Abstract
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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- February 1977
- DOI:
- 10.1093/mnras/178.3.307
- Bibcode:
- 1977MNRAS.178..307C
- Keywords:
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- Astronomical Maps;
- Astronomical Models;
- Cassiopeia A;
- Supernova Remnants;
- X Ray Astronomy;
- Error Analysis;
- Oao 3;
- Radiant Flux Density;
- Radio Astronomy;
- Shock Wave Interaction;
- Astrophysics