Statistics – Computation
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...398l..13a&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 398, no. 1, p. L13-L16.
Statistics
Computation
48
Galactic Clusters, Galactic Evolution, Quasars, Computational Astrophysics, Luminosity, Red Shift, Sky Surveys (Astronomy)
Scientific paper
We have gathered several complete quasar surveys (greater than 1600 objects in total) to gain statistical information about the evolution of their clustering. We have computed both the conditional density and the two-point correlation functions. The quasar two-point correlation function does not evolve in comoving coordinates and the characteristic length scale turns out to be between 6 and 10/h Mpc at the average redshifts of 0.70, 1.44, and 2.15. A steepening of the slope with redshift is however suggested by the conditional density. Moreover, a possible signature of quasar clustering is seen at redshift than 2.2. This behavior strongly constrains both theories of galaxy formation predicting a strong evolution of clustering and those predicting a high contribution of unresolved QSOs to the X-ray background.
Andreani Paola
Cristiani Stefano
No associations
LandOfFree
The evolution of quasar clustering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The evolution of quasar clustering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The evolution of quasar clustering will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1869678