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- W1638657526 abstract "We construct merger trees based on the extended Press-Schechter theory (EPS) in order to study the merger rates of dark matter haloes over a range of present day mass (10 10 M⊙ 6 M0 6 10 15 M⊙), progenitor mass (5 × 10 3 6 ξ 6 1) and redshift (0 6 z 6 3). We used the first crossing distribution of a moving barrier of the form B(S, z) = p(z) + q(z)S, proposed by Sheth & Tormen, to take into account the ellipsoidal nature of collapse. We find that the mean merger rate per halo Bm/n depends on the halo mass M as M 0.2 and on the redshift as (dδc(z)/dz) 1.1 . Our results are in agreement with the predictions of N-body simulations and this shows the ability of merger-trees based on EPS theory to follow with a satisfactory agreement the results of N-body simulations and the evolution of structures in a hierarchical Universe." @default.
- W1638657526 created "2016-06-24" @default.
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- W1638657526 date "2009-05-06" @default.
- W1638657526 modified "2023-10-01" @default.
- W1638657526 title "Merger rates of dark matter haloes from merger trees in the extended Press-Schechter theory" @default.
- W1638657526 hasPublicationYear "2009" @default.
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