A Million-Second Chandra View of Cassiopeia A

Details A Million-Second Chandra View of Cassiopeia A A Million-Second Chandra View of Cassiopeia A

2004-09-30

arxiv.org/abs/astro-ph/0409760v1

Astrophys.J. 615 (2004) L117-L120

Astronomy and Astrophysics

Astrophysics

4 pages LaTeX with 2 figures; ApJL,in press

Scientific paper

10.1086/426186

We introduce a million-second observation of the supernova remnant Cassiopeia A with the Chandra X-ray Observatory. The bipolar structure of the Si-rich ejecta (NE jet and SW counterpart) is clearly evident in the new images, and their chemical similarity is confirmed by their spectra. These are most likely due to jets of ejecta as opposed to cavities in the circumstellar medium, since we can reject simple models for the latter. The properties of these jets and the Fe-rich ejecta will provide clues to the explosion of Cas A.

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