Galaxies as Gravitational Lenses

Details Galaxies as Gravitational Lenses Galaxies as Gravitational Lenses

Oct 1968

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1968sci...162..348b&link_type=abstract

Science, Volume 162, Issue 3851, pp. 348-352

Mathematics

Logic

40

Scientific paper

Of all the galaxies in the visible part of the universe, 500 million are seen through intervening galaxies. In some instances the foreground galaxy will act as a gravitational lens and produce distorted and (in brightness) greatly amplified images of the galaxy behind it; such images may simulate starlike superluminous objects such as quasars (quasi-stellar objects). The number of gravitational lenses is several times greater than the number of quasars yet observed. In other instances the superposition of the image upon a visible foreground galaxy may simulate morphological configurations resembling N-type, dumbbell, spiral, or barred-spiral galaxies.

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