Einstein X-ray observations of QSO's with absorption-line systems

Details Einstein X-ray observations of QSO's with absorption-line systems Einstein X-ray observations of QSO's with absorption-line systems

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87..845j&link_type=abstract

Astronomical Journal, vol. 87, June 1982, p. 845-848.

Astronomy and Astrophysics

Astronomy

7

Absorption Spectra, Astronomical Models, Heao 2, Line Spectra, Quasars, X Ray Astronomy, Astronomical Spectroscopy, Electromagnetic Absorption, Relativistic Velocity, Spectrum Analysis

Scientific paper

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.

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