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Quasar Clustering

Published online by Cambridge University Press:  19 July 2016

P.A. Shaver
P.A. Shaver*
Affiliation:
European Southern Observatory Karl-Schwarzschild-Str. 2 D-8046 Garching bei München F.R.G.

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If quasars are distributed cosmologically according to their red-shifts, then it is expected that their distribution on the sky will be very close to random, because it is in that case an average over an enormous range in distance. Most studies find no significant clustering. It has recently been suggested, however, that there may be a highly significant excess of close pairs of quasars with different redshifts1, although this has been disputed2. The new ROE/ESO quasar survey3 provides a very large and deep sample over a connected area of sky, ideal for a more sensitive search for clustering. The result is shown in fig. 1. The observed distributions appear to be random, on all scales from less than an arcmin to tens of degrees.

Type
Chapter XV: Clustering of Quasi-Stellar Objects
Information
Symposium - International Astronomical Union , Volume 124: Observational Cosmology , 1987 , pp. 815 - 819
Copyright
Copyright © Reidel 1987 

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