Warm absorbers in narrow-line Seyfert 1 galaxies
Abstract
We present a study of the X-ray properties of several NLS1 galaxies, focusing on their warm absorbers. In the first part, we discuss properties of dusty and dust-free warm absorbers in NLS1s, and study their potential contribution to high-ionization optical iron lines. In the second part, we summarize our work on the exceptional spectral variability of the NLS1 galaxy RXJ0134.3-4258 (from Γ≃-4.4 in the ROSAT all-sky survey observation, to ≃-2.2 in our subsequent pointed observation).
- Publication:
-
New Astronomy Reviews
- Pub Date:
- September 2000
- DOI:
- 10.1016/S1387-6473(00)00084-1
- arXiv:
- arXiv:astro-ph/9810105
- Bibcode:
- 2000NewAR..44..483K
- Keywords:
-
- Astrophysics
- E-Print:
- 6 pages incl. 2 figures (needs paspconf.sty), to appear in the proc. of "High Energy Processes in Accreting Black Holes" (Sweden, June 29 -July 4, 1998), J. Poutanen &