A method for estimating the masses of some quasars

Details A method for estimating the masses of some quasars A method for estimating the masses of some quasars

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...256..386d&link_type=abstract

Astrophysical Journal, Part 1, vol. 256, May 15, 1982, p. 386-389. Research supported by the Natural Sciences and Engineering R

Astronomy and Astrophysics

Astrophysics

7

Gravitational Effects, Image Resolution, Mass, Optical Paths, Quasars, Galactic Clusters, Gravitational Fields, Very Long Base Interferometry

Scientific paper

The gravitational distortion effect of a nearby quasar on the image of a distant quasar in nearly the same direction is discussed as a method for estimating the mass of the nearer quasar. Account is taken of the effect of a cluster of galaxies in which the nearer quasar may be situated. Such optically double quasars yield upper mass limits when the image of the distant quasar is not completely resolved. The pair 1038+528 is considered as an example of the method and yields a limiting mass of 7 x 10 to the 13th solar masses for simple assumptions, consistent with the estimate of Bahcall and Tremaine (1981).

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