Formation of Voids

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

A spherical Lagrangian hydrodynamic code has been written to study the formation of voids as a consequence of the development of negative density perturbations. In this code we take into account the presence of dark matter and a series of physical processes that are present during and after the recombination era. In particular we found that the formation of voids, in a negative density perturbation scenario with cosmological constant, of diameter of up to 35 Mpc is possible, for the perturbation spectra and Universe models here considered.

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