Another possible case of a gravitational lens

Details Another possible case of a gravitational lens Another possible case of a gravitational lens

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...248l.101p&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 248, Sept. 15, 1981, p. L101-L104.

Mathematics

Logic

49

Astronomical Models, Cosmology, Galactic Clusters, Gravitational Lenses, Quasars, Point Sources, Radial Velocity, Red Shift, Velocity Distribution

Scientific paper

A cluster of three quasars at redshift 2.05 discovered by Burbidge et al. (1980) may be a triple image of a single quasar produced by two spherical clusters of galaxies acting as a gravitational lens. The core radii and velocity dispersions required for the clusters by our model are not unreasonable, but a positive cosmological constant would bring the velocity dispersion within clusters down, closer to that commonly observed. If the clusters were discovered and their redshifts and velocity dispersions were measured, then an estimate of the cosmological constant could be made.

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