HRCam survey for closely spaced gravitational lenses
1992; IOP Publishing; Volume: 392; Linguagem: Inglês
10.1086/171400
ISSN1538-4357
AutoresD. Crampton, R. D. McClure, J. M. Fletcher,
Tópico(s)Astronomy and Astrophysical Research
Resumoview Abstract Citations (40) References (17) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS HRCam Survey for Closely Spaced Gravitational Lenses Crampton, David ; McClure, Robert D. ; Fletcher, J. M. Abstract The CFHT image stabilizing camera HRCam was used to search for closely spaced images indicative of gravitational lensing among a sample of 101 apparently and intrinsically luminous quasars. No conclusive evidence of multiple imaging due to lensing was found. Although these results are in accord with recent predictions based on standard models of the universe, Turner points out that model universes dominated by a nonzero cosmological constant are not favored. No significant excess of galaxies near the quasars was found, in contrast to the results of Webster et al. and, more recently, by Drinkwater, Webster, & Thomas. Publication: The Astrophysical Journal Pub Date: June 1992 DOI: 10.1086/171400 Bibcode: 1992ApJ...392...23C Keywords: Astronomical Photography; Gravitational Lenses; Sky Surveys (Astronomy); Cosmology; Galaxies; Quasars; Spatial Distribution; Astrophysics; COSMOLOGY: OBSERVATIONS; COSMOLOGY: GRAVITATIONAL LENSING; GALAXIES: QUASARS: GENERAL full text sources ADS | data products SIMBAD (99) NED (99)
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