Einstein X-ray observations of QSO's with absorption-line systems
Abstract
The detection of X-ray emission from eight QSO's is reported, plus an upper limit to the X-ray flux from one QSO, using the Einstein X-ray Observatory (HEAO-2). Each object in the sample contains at least one absorption-line system that has been identified in its optical spectrum. The present results are combined with those of other investigators to form a sample of 44 absorption-line QSO's (with 2e greater than 1.2) which have been observed in the X-ray. This sample cannot be distinguished, in terms of X-ray properties, from one which consists of QSO's in which no absorption systems have been identified. These results are consistent with extrinsic models for absorption-line clouds, as well as with current versions of intrinsic models.
- Publication:
-
The Astronomical Journal
- Pub Date:
- June 1982
- DOI:
- Bibcode:
- 1982AJ.....87..845J
- Keywords:
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- Absorption Spectra;
- Astronomical Models;
- Heao 2;
- Line Spectra;
- Quasars;
- X Ray Astronomy;
- Astronomical Spectroscopy;
- Electromagnetic Absorption;
- Relativistic Velocity;
- Spectrum Analysis;
- Astronomy