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The x ray properties of a large, uniform QSO sample: Einstein observations of the LBQSAlthough there are large numbers of Quasi Stellar Objects (QSO's) now observed in X rays, extensive X-ray observations of uniformly selected, 'complete' QSO samples are more rare. The Large Bright QSO Survey (LBQS) consists of about 1000 objects with well understood properties, most brighter than B = 18.8 and thus amenable to X-ray detections in relatively brief exposures. The sample is thought to be highly complete in the range 0.2 less than z less than 3.3, a significantly broader interval than many other surveys. The Einstein IPC observed 150 of these objects, mostly serendipitously, during its lifetime. We report the results of an analysis of these IPC data, considering not only the 20 percent of the objects we find to have positive X-ray detections, but also the ensemble X-ray properties derived by 'image stacking'.
Document ID
19930007917
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Margon, B.
(Seattle Univ. WA, United States)
Anderson, S. F.
(Seattle Univ. WA, United States)
Xu, X.
(Seattle Univ. WA, United States)
Green, P. J.
(Seattle Univ. WA, United States)
Foltz, C. B.
(Arizona Univ. Tucson., United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1992
Publication Information
Publication: MPI fuer Extraterrestrische Physik, X Ray Emission from Active Galactic Nuclei and the Cosmic X Ray Background
Subject Category
Astronomy
Accession Number
93N17106
Funding Number(s)
CONTRACT_GRANT: NAG5-1254
CONTRACT_GRANT: NAG8-590
CONTRACT_GRANT: NAG5-1253
Distribution Limits
Public
Copyright
Other
Document Inquiry

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