A Million-Second Chandra View of Cassiopeia A
Astrophysics
2009-11-10 v1
Abstract
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.
Cite
@article{arxiv.astro-ph/0409760,
title = {A Million-Second Chandra View of Cassiopeia A},
author = {Una Hwang and J. Martin Laming and Carles Badenes and Fred Berendse and John Blondin and Denis Cioffi and Tracey DeLaney and Daniel Dewey and Robert Fesen and Kathryn A. Flanagan and Christopher L. Fryer and Parviz Ghavamian and John P. Hughes and Jon A. Morse and Paul P. Plucinsky and Robert Petre and Martin Pohl and Lawrence Rudnick and Ravi Sankrit and Patrick O. Slane and Randall K. Smith and Jacco Vink and Jessica S. Warren},
journal= {arXiv preprint arXiv:astro-ph/0409760},
year = {2009}
}
Comments
4 pages LaTeX with 2 figures; ApJL,in press