Very close pairs of Quasi-Stellar Objects
Astrophysics
2007-05-23 v1
Abstract
It is pointed out that there are now known four very close pairs of QSOs with separations < 5 arcsec and very different redshifts. Several estimates of the probability that they are accidental configurations range between 10^{-7} and 3.5 x 10^{-3}. We conclude either that this is further evidence that QSOs have significant non-cosmological redshift components, or that thave significant non-cosmological redshift components, or that the pairs must be explained by gravitational lensing.
Cite
@article{arxiv.astro-ph/9601031,
title = {Very close pairs of Quasi-Stellar Objects},
author = {G. Burbidge and F. Hoyle and P. Schneider},
journal= {arXiv preprint arXiv:astro-ph/9601031},
year = {2007}
}
Comments
8 pages, including 1 figure, submitted to Astronomy and Astrophysics Letters