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- W3010342302 abstract "In this paper we calculate the density profiles of viri- alized halos both in the case of structure evolving hierarchically from a scale-free Gaussian field having a power spectrum P(k) / k n in a =1 Universe and in the case of the CDM model, by using a modified version of Hoffman & Shaham's (1985) (hereafter HS) and Hoffman's (1988) model. We sup- pose that the initial density contrast profile around local max- ima is given by the mean peak profile introduced by Bardeen et al. (1986) (hereafter BBKS), and is not just proportional to the two-point correlation function, as assumed by HS. We show that the density profiles, both for scale-free Universes and the CDM model, are not power-laws but have a logarithmic slope that in- creases from the inner halo to its outer parts. Both scale-free, for n 1, and CDM density profiles are well approximated by Navarro et al. (1995, 1996, 1997) profile. The radius a ,a t which the slope = 2, is a function of the mass of the halo and in the scale-free models also of the spectral index n." @default.
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- W3010342302 date "2000-01-01" @default.
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- W3010342302 title "Density profiles of dark matter halos in an improved secondary infall model" @default.
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