Motion of quasar images by gravitational lens galaxies

Details Motion of quasar images by gravitational lens galaxies Motion of quasar images by gravitational lens galaxies

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.119..227f&link_type=abstract

(IAU, Asian-Pacific Regional Meeting, 3rd, Kyoto, Japan, Sept. 30-Oct. 5, 1984) Astrophysics and Space Science (ISSN 0004-640X),

Astronomy and Astrophysics

Astronomy

Galaxies, Gravitational Lenses, Image Motion Compensation, Quasars, Radio Sources (Astronomy), Very Long Base Interferometry, Equations Of Motion

Scientific paper

A weak gravity field and a point mass lens are assumed in the present study of rotational motion in twin quasar images that are due to the motion of a gravitational lens galaxy's passing near a straight line connecting the observer with the quasar. Quasar image positions and velocities are calculated on the basis of various sets of parameters. The images are found to move a few hundred milliarcsec/year or more, if the lens galaxy passes within a thousandth parsec of the quasar-observer line. The distance between the galactic center and the quasar images is about 10 kiloparsec at most.

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