The expansion of Cassiopeia A as seen in X-rays
| dc.creator | Vink, Jacco | |
| dc.creator | Bloemen, Hans | |
| dc.creator | Kaastra, Jelle | |
| dc.creator | Bleeker, Johan | |
| dc.date | 1998-06-24 | |
| dc.date | 1998-09-01 | |
| dc.date.accessioned | 2026-07-07T02:27:16Z | |
| dc.date.available | 2026-07-07T02:27:16Z | |
| dc.description | We have for the first time measured the overall expansion rate of the supernova remnant Cas A as seen in X-rays using ROSAT and Einstein HRI images with time differences up to almost 17 years. The overall expansion timescale of Cas A is found to be 501 plusminus 15 yr. This is significantly shorter than the timescale based on high resolution radio data. Although the results clearly indicate that Cas A is not anymore in the free expansion phase,the discrepancy between the radio and X-ray timescales cannot be easily understood. Furthermore, the expansion rate is incompatible with that predicted by a self-similar model for a supernova remnant ploughing through the wind of its progenitor. | |
| dc.description | 7 pages; 4 figures. Accepted by Astronomy and Astrophysics (August 3, 1998). Major text changes have been made, mostly in section 4. For more information see http://www.sron.nl/~jaccov/casAexp/casa_exp.html | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9806319 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9806319 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/12621 | |
| dc.subject | Astrophysics | |
| dc.title | The expansion of Cassiopeia A as seen in X-rays | |
| dc.type | text |