Gravitational lens limits on cosmological black holes
Journal Article
·
· Astrophysical Journal; (USA)
- Jerusalem Hebrew Univ. (Israel) E. O. Hulburt Center for Space Research, Washington, DC (USA)
The limits that gravitational lensing can place on a critical universe completely filled with randomly distributed black holes (BHs) and 1/10 filled with BHs are investigated. Specifically, the fraction of QSOs split is calculated, such that two distinct images would be observable to modern telescopes. It is found that lens search programs at dim surface brightnesses or high QSO redshift would find a large fraction of lens-induced image pairs to have one image significantly dimmer than the other: 5 mag or more. Nondetection of QSO pairs or counterimages with modern optical telescopes can rule out cosmological BHs of M greater than 10 to the 12th solar masses. It is predicted that the Hubble Space Telescope will either reduce this upper bound significantly or discover a significant number of dim QSO lens induced counterimages with separations between 0.1 arcsec and 1 arcsec. Similarly, very long baseline interferometry measurements have the capability of reducing the upper bound still further, down to 100,000 solar masses, or discovering a significant number of dim counterimages at an angular distance greater than 0.001 arcsec from bright, distant quasars. 32 refs.
- OSTI ID:
- 6576642
- Journal Information:
- Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 358; ISSN ASJOA; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Wed May 01 00:00:00 EDT 1985
· Astron. J.; (United States)
·
OSTI ID:5562457
DISCOVERY OF A QUADRUPLE LENS IN CANDELS WITH A RECORD LENS REDSHIFT z = 1.53
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Fri Nov 01 00:00:00 EDT 2013
· Astrophysical Journal Letters
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OSTI ID:22215388