41 citations · 41 across the 1 of their papers we have counts for
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Cluster mass functions in the quintessential Universe
Ewa L. Lokas, Paul Bode, Yehuda Hoffman
We use -body simulations to measure mass functions in flat cosmological models with quintessence characterized by constant with , -2/3 and -1/2. The results are compar…
Structure formation in the quintessential Universe
Ewa L. Lokas
I review the main characteristics of structure formation in the quintessential Universe. Assuming equation of state w=p/\varrho=$const I provide a brief description of the backgrou…
Nonlinear evolution of spherical perturbation in a non-flat Universe with cosmological constant
Ewa L. Lokas, Yehuda Hoffman
We generalize the spherical collapse model for the formation of bound objects to apply in a Universe with arbitrary positive cosmological constant. We calculate the critical condit…
Evolution of density profiles of dark matter halos
Ewa L. Lokas
I apply the modified spherical infall model to test the dependence of the shape of density profiles of dark matter halos on redshift. The model predicts that the density profile of…
Density profiles of galactic dark halos
Ewa L. Lokas
I propose a modification of the spherical infall model for the evolution of density fluctuations with initially Gaussian probability distribution and scale-free power spectra. I in…
Halo profiles from weakly nonlinear initial conditions
Ewa L. Lokas
Using weakly nonlinear conditional PDF for the density field around an overdense region we find that the expected density contrast around a peak is always smaller while its rms flu…