The Cassiopeia A Supernova Remnant in X-Rays

Details The Cassiopeia A Supernova Remnant in X-Rays The Cassiopeia A Supernova Remnant in X-Rays

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007rmxac..30...72l&link_type=abstract

Circumstellar Media and Late Stages of Massive Stellar Evolution (Eds. G. García-Segura & E. Ramirez-Ruiz) Revista Mexicana de A

Astronomy and Astrophysics

Astronomy

Supernovae: Individual (Cassiopeia A), Supernova Remnants

Scientific paper

We review progress to date on analysis of the 1 million second Chandra Very Large Project (VLP)observation of the Cassiopeia A supernova remnant. We explore the possibility that Casexploded into a ``bubble''. The red supergiant wind into which its blast wave is currently expanding, was possibly followed by a short period of fast tenuous Wolf-Rayet wind prior to explosion, leaving a low density region at the center, surrounded by higher density red supergiant wind. We also review the current state of hard X-ray observations and determination of the mass of 44Ti thought to have been ejected in the explosion, with a view to the constraints this places on the nature of the explosion itself, and where in the remnant 44Ti decay products are likely to be found.

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