Quasar image doubling associated with absorption systems

Details Quasar image doubling associated with absorption systems Quasar image doubling associated with absorption systems

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.281..550k&link_type=abstract

Nature, vol. 281, Oct. 18, 1979, p. 550, 551.

Astronomy and Astrophysics

Astronomy

4

Absorption Spectra, Astronomical Spectroscopy, Galactic Radiation, Image Resolution, Interstellar Extinction, Quasars, Astronomical Models, Galactic Structure, Gravitational Fields, Line Spectra, Ray Tracing, Very Large Array (Vla)

Scientific paper

It is proposed that the absorption of quasar radiation by intervening galaxies leads not only to the appearance of some of the quasar absorption lines but to multiple images due to light bending by the absorbing galaxy. It is assumed that the presence of a quasar absorption system at a given redshift implies the presence of a galaxy at that redshift, and a graphical method for determining the angle by which the ray reaching earth differs from the undeflected line of sight past the galaxy is presented. Gravitationally focused quasar images are expected to be detectable by the Space Telescope and the Very Large Array, as well as by autocorrelation of the variability of unresolved quasar images.

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