Great Attractors at High Redshifts

Details Great Attractors at High Redshifts Great Attractors at High Redshifts

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.269..277k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 269, NO. 2/JUL15, P. 277, 1994

Astronomy and Astrophysics

Astronomy

22

Scientific paper

We argue that the majority of QSOs at z <~ 2-3 form in merging and interacting galaxies produced during the first generation of matter crossings which occur in galaxy protoclusters. Groups of quasars (QGs) with a few or more than a dozen members, within compact regions of <~100 h^-1^ Mpc found at z <~ 1-2, may belong to concentrations of young clusters of galaxies, and thus indicate the locations of enhanced-density regions (GA progenitors) which develop later into quasi-linear systems like the local Great Attractor (GA) or Shapley Concentration. These early large-scale galactic structures (LSSs) (i) provide a natural way to `bias' the distribution of Abell clusters, and (ii) suggest that the spectrum of primordial density perturbations is nearly flat at scales encompassing both clusters ad GAs, l = πk^-1^ is a subset of (10, 100) h^-1^ Mpc: {DELTA}_k_^2^ ~ k^3^P(k)~kgamma^, γ = 1_-0.4_^+0.6^, where P(k) is the power spectrum of density perturbations.

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