X-Ray Absorption in Active Galaxies: Constraints on the Broad-Line Emitting Regions
Abstract
X-ray observations of intrinsic absorption in active galactic nuclei (AGN) provide direct information concerning the amount and physical properties of cool (unionized) material along the line of sight. The X-ray absorption is assumed to occur in the broad-line emitting gas, so that the X-ray data can be used to probe the conditions in the broad-line regions of AGN. The results of Einstein Observatory solid state spectrometer observations are used to derive detailed physical constraints concerning the geometry of the broad-line region. Physical implications of these constraints are also discussed.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 1986
- DOI:
- 10.1086/164054
- Bibcode:
- 1986ApJ...303...87R
- Keywords:
-
- Absorption Spectra;
- Active Galaxies;
- Constraints;
- Emission Spectra;
- Galactic Nuclei;
- Spectral Line Width;
- X Ray Spectra;
- Active Galactic Nuclei;
- Astronomical Spectroscopy;
- Gas Temperature;
- Quasars;
- Astrophysics;
- GALAXIES: NUCLEI;
- QUASARS;
- X-RAYS: SPECTRA