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Imaging with a Gravitational Lens
Symposium - International Astronomical Union, 1994The basic ideas of gravitational microlensing are discussed. Particular attention is given to the use of a gravitational lens as a (non-standard) telescope, to probe the very small scale structure of extragalactic sources. The recovery of information from a gravitational lens telescope is discussed, as well as the unique contribution which can be made ...
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The Discovery of a Gravitational Lens
Scientific American, 1980A recently discovered, close pair of quasars were surprisingly similar in their characteristics. After rejecting other hypotheses, astronomers suggested that the pair is not a pair at all but two images of a single quasar formed by a gravitational lens, an elliptical galaxy halfway between the quasar and our galaxy. Improved calculations of the effects
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Discovery of a New Gravitational Lens System
Science, 1984A new gravitational lens system, the triple radio source MG2016+112, has been discovered. Five emission lines at a redshift of 3.2733 ± 0.0014 have been identified in the spectra of two stellar objects of magnitude 22.5 coincident with radio components 3.4 arc seconds apart. The lines are the narrowest ever observed in objects at such a large redshift.
Lawrence, C. R. +7 more
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American Journal of Physics, 1969
Simulated gravitational lens made of Plexiglass for demonstrating stellar gravitational lens phenomena, presenting partial cross ...
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Simulated gravitational lens made of Plexiglass for demonstrating stellar gravitational lens phenomena, presenting partial cross ...
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Gravitational Self-Lens Effect
Physical Review D, 1973The optical image of a luminous mass under the influence of its own gravitational field near the Schwarzschild radius, as in the case of a dense neutron star, is studied. It is found that two important deviations from the classical nonrelativistic behavior occur. First, the stellar body appears to be enlarged by a gravitational self-lens effect. In the
F. Winterberg, W. G. Phillips
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Kerr black hole as a gravitational lens
Physical Review D, 1986We present approximate solutions to the equations of motion for a ray of light in the Kerr metric which are correct up to and including second-order terms in m/${r}_{\mathrm{min}}$ and a/${r}_{\mathrm{min}}$, where m and a are the Kerr mass and spin, respectively, while ${r}_{\mathrm{min}}$ is the distance of closest approach.
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2008
Recently, interest in gravitational lenses has expanded to include the study of the images of extended sources such as galaxies as well as of those of unresolved point sources like quasars. The giant luminous arcs associated with the rich clusters Abell 370, Cl2244-02, and Abell 963, together with the ring radio source MG1131+0456, are now widely ...
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Recently, interest in gravitational lenses has expanded to include the study of the images of extended sources such as galaxies as well as of those of unresolved point sources like quasars. The giant luminous arcs associated with the rich clusters Abell 370, Cl2244-02, and Abell 963, together with the ring radio source MG1131+0456, are now widely ...
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Gravitational Lens Effect: An Observational Test
Science, 1966The large proper motion of the nearby star 40 Eridani-A will pass a distant star in 1988. It should be possible to observe the gravitational lens effect of this eclipse by existing photoelectric methods.
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An unexpected high concentration for the dark substructure in the gravitational lens SDSSJ0946+1006
Monthly Notices of the Royal Astronomical Society, 2021Quinn Minor +2 more
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