New {\it Chandra} Results on Seyfert I galaxies: Fe-K lines
| dc.creator | Padmanabhan, U. | |
| dc.creator | Yaqoob, T. | |
| dc.date | 2002-11-17 | |
| dc.date.accessioned | 2026-07-07T02:06:25Z | |
| dc.date.available | 2026-07-07T02:06:25Z | |
| dc.description | We present measurements of the Fe-K line for nine Seyfert I galaxies using Chandra High Energy Transmission Grating Spectrometer (HETGS) data. The centroid energies are narrowly dispersed (6.403 +/- 0.062 keV) and indicate an origin of the line cores in cold matter. If {\it all} the lines in this sample were the peaks of a relativistically broadened disk line, it would require unrealistically fine tuning. However, at least three of the nine AGN clearly show a complex Fe-K line with an underlying broad component, possibly from a disk. In the others, an apparently narrow Fe-K line (even if it is resolved by Chandra) may still be due to the peak of a disk line. To distinguish this scenario from an origin in distant matter requires variability information. | |
| dc.description | 6 pages, 2 figures, 1 table, In Conference Proceedings,``High Energy Processes and Phenomena in Astrophysics'' (IAU Symp. 214), Suzhou, China, 2002 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0211386 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0211386 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/5366 | |
| dc.subject | Astrophysics | |
| dc.title | New {\it Chandra} Results on Seyfert I galaxies: Fe-K lines | |
| dc.type | text |