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| Paper: |
Clustering of Identical Quasars in the SDSS First Data Release |
| Volume: |
311, AGN Physics with the Sloan Digital Sky Survey |
| Page: |
467 |
| Authors: |
Trump, J.R.; Schneider, D.P.; Richards, G.T. |
| Abstract: |
We discuss sets of "identical" clustered quasars from the Sloan Digital Sky Survey First Data Release at comoving separations up to 200 h−1Mpc (in a cosmology with ΩM = 0.3 and ΩΛ = 0.7). The components of each set have nearly identical redshifts, colors, and spectra. While most of the comparisons were two-point, several identical triplets were also identified. Statistical analyses show that the amount of spectral similarity in quasars pairs within 110 h−1Mpc exceeds the expected similarity from a randomly distributed set of quasars. The high degree of exhibited spectral similarity is unlikely to be due to gravitational lensing at such wide separations. |
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