Blandford, R. D. and Hogg, D. W. (1996) Gravitational Telescopes. In: Astrophysical Applications of Gravitational Lensing. IAU Symposium Proceedings Series. No.173. Kluwer , Dordrecht, pp. 355-364. ISBN 9780792339540. https://resolver.caltech.edu/CaltechAUTHORS:20181116-110732499
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Abstract
Some ways in which gravitational lenses can act as crude telescopes are reviewed. Magnification limits associated with finite source size, corrugation of the gravitational potential and finite wavelength are specified. It should be possible to obtain rotation curves for a small sample of ultra-faint galaxies imaged as giant arcs. There is an appreciable chance of eventually observing a radio jet component cross a caustic. The successful observation of microlensing in 2237+031 suggests that the continuum emission from this source at blue wavelengths is at least partly non-thermal. The maximum possible magnification observable, granted existing constraints is argued to be from γ-ray pulsars crossing caustic sheets formed by galaxies or a hypothetical population of intergalactic massive objects.
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Additional Information: | © 1996 IAU. We thank Rachel Webster and her colleagues for organizing an excellent meeting and for financial assistance. Helpful conversations with Ian Browne, Jordi Miralda-Escudé and Joachim Wambsganss are gratefully acknowledged. This research was supported by NSF contract AST93-23375. | ||||||||||||
Group: | TAPIR | ||||||||||||
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Series Name: | IAU Symposium Proceedings Series | ||||||||||||
Issue or Number: | 173 | ||||||||||||
Record Number: | CaltechAUTHORS:20181116-110732499 | ||||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20181116-110732499 | ||||||||||||
Official Citation: | Blandford, R., & Hogg, D. (1996). Gravitational Telescopes. Symposium - International Astronomical Union, 173, 355-364. doi:10.1017/S007418090023180X | ||||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
ID Code: | 90963 | ||||||||||||
Collection: | CaltechAUTHORS | ||||||||||||
Deposited By: | Tony Diaz | ||||||||||||
Deposited On: | 09 Mar 2020 14:56 | ||||||||||||
Last Modified: | 11 May 2020 22:59 |
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