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Record 77 of 5162
X-ray-selected AGNs near bright galaxies
External Online Source: doi:10.1086/184852
Author and Affiliation:
Stocke, John T.(Colorado, University, Boulder, United States)
Schneider, Peter(Joint Institute for Laboratory Astrophysics, Boulder, CO, Max-Planck-Institut fuer Astrophysik)
Morris, Simon L.(Arizona, University, Tucson, United States)
Gioia, Isabella M.(Colorado Univ., Boulder, CO, United States)
Maccacaro, Tommaso(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States)
et al.
Abstract: Among the numerous low-redshift low-luminosity X-ray sources discovered with the Einstein Observatory, ten AGNs were identified that are projected within three optical diameters of bright (V less than 18) foreground galaxies. These AGNs near galaxies have significantly higher redshifts than the sample as a whole. This discovery is interpreted in terms of gravitational 'microlensing' in which stars in the foreground galaxy have significantly brightened the X-ray emission from these higher redshift AGNs, allowing their detection. It is suggested that microlensing may be responsible for a significant alteration of the inherent QSO luminosity function.
Publication Date: Apr 01, 1987
Document ID:
(Acquired Nov 28, 1995)
Accession Number: 87A38386
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X); 315; L11-L15
Publisher Information: United States
Contract/Grant/Task Num: NAS8-30751; NAG8-575; NSG-7128
Financial Sponsor: NASA; United States
Organization Source: Colorado Univ.; Boulder, CO, United States
Max-Planck-Inst. fuer Astrophysik; Garching, Germany
Arizona Univ.; Tucson, AZ, United States
Harvard-Smithsonian Center for Astrophysics; Cambridge, MA, United States
Description: 6p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
Imprint And Other Notes: Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 315, April 1, 1987, p. L11-L15.
Availability Source: Other Sources
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