Nonthermal Bremsstrahlung vs. Synchrotron Radiation: Cas A
| dc.creator | Allen, G. E. | |
| dc.creator | Stage, M. D. | |
| dc.creator | Houck, J. C. | |
| dc.date | 2007-09-25 | |
| dc.date.accessioned | 2026-07-07T08:32:15Z | |
| dc.date.available | 2026-07-07T08:32:15Z | |
| dc.description | We performed a spectral analysis of some Chandra ACIS and RXTE PCA data for the supernova remnant Cas A. A very large (1.1 Ms) ACIS data set is used to identify regions dominated by synchrotron radiation. The best-fit spectral models for these regions are combined to obtain a composite synchrotron model for the entire remnant. The difference between this model and the observed PCA flux is fitted with a nonthermal bremsstrahlung model. The results of this analysis suggest that (1) the ratio of the nonthermal bremsstrahlung to synchrotron radiation varies from about 2:1 to 4:1 in the 10-32 keV energy band, (2) the electron spectrum is significantly steeper at 10-32 keV than it is at 1 GeV, (3) about 5% of the electrons are nonthermal and (4) about 30% of the energy in the electron distribution is in nonthermal electrons. | |
| dc.description | 4 pages, 3 figures, proceedings paper for the 30th International Cosmic Ray Conference | |
| dc.identifier | https://arxiv.org/abs/0709.4049 | |
| dc.identifier | http://arxiv.org/abs/0709.4049 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/138741 | |
| dc.subject | Astrophysics | |
| dc.title | Nonthermal Bremsstrahlung vs. Synchrotron Radiation: Cas A | |
| dc.type | text |