X-ray spectral components from a broad band BeppoSAX observation of the Seyfert galaxy IC 4329A
| dc.creator | Perola, G. C. | |
| dc.date | 1999-10-04 | |
| dc.date.accessioned | 2026-07-07T02:33:39Z | |
| dc.date.available | 2026-07-07T02:33:39Z | |
| dc.description | From the spectral analysis of a broadband (0.1-200 keV) BeppoSAX observation of the Seyfert 1 galaxy IC 4329A, the main results obtained are: a) the amount of reflection, together with the intensity of the iron K line, indicate a geometry with a solid angle substantially less than 2pi; b) the power law is affected by a cut off with e-folding energy about 270 keV, the fourth individual object so far where this property has been firmly detected; c) two absorption features at about 0.7 and 1 keV are found, the first corresponding to a blend of O vi and O vii, the other to a combination of FeL and NeK edges. Compared to an earlier ASCA observation, when the source was 30% fainter, the values of both the relative amount of reflection and the warm absorber ionization degree are significantly lower: the comparison is suggestive of sizeable delay effects in this object, due to geometrical factors in the reflection, and to relaxation to equilibrium states in the ionization of the absorber. | |
| dc.description | 9 pages, 8 figures, accepted for publication in Astronomy and Astrophysics | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9910054 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9910054 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/14930 | |
| dc.subject | Astrophysics | |
| dc.title | X-ray spectral components from a broad band BeppoSAX observation of the Seyfert galaxy IC 4329A | |
| dc.type | text |