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- W2009473412 abstract "We evaluate the dependence of the cluster correlation length, rc, on the mean intercluster separation, Dc, for three models with critical matter density, vanishing vacuum energy (Λ = 0), and COBE normalization: a tilted cold dark matter (tCDM) model (n = 0.8) and two blue mixed models with two light massive neutrinos, yielding Ωh = 0.26 and 0.14 (MDM1 and MDM2, respectively). All models approach the observational value of σ8 (and hence the observed cluster abundance) and are consistent with the observed abundance of damped Lyα systems. Mixed models have a motivation in recent results of neutrino physics; they also agree with the observed value of the ratio σ8/σ25, yielding the spectral slope parameter Γ, and nicely fit Las Campanas Redshift Survey (LCRS) reconstructed spectra. We use parallel AP3M simulations, performed in a wide box (of side 360 h-1 Mpc) and with high mass and distance resolution, enabling us to build artificial samples of clusters, whose total number and mass range allow us to cover the same Dc interval inspected through Automatic Plate Measuring Facility (APM) and Abell cluster clustering data. We find that the tCDM model performs substantially better than n = 1 critical density CDM models. Our main finding, however, is that mixed models provide a surprisingly good fit to cluster clustering data." @default.
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- W2009473412 date "2000-10-10" @default.
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- W2009473412 title "Cluster Correlation in Mixed Models" @default.
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- W2009473412 doi "https://doi.org/10.1086/309498" @default.
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