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collapse: Spherical-collapse model code

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Ada Coda
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collapse: Spherical-collapse model code

Postby Ada Coda » Thu Mar 01, 2018 3:03 am

collapse: Spherical-collapse model code

Abstract: collapse calculates the spherical−collapse for standard cosmological models as well as for dark energy models when the dark energy can be taken to be spatially homogeneous. The calculation is valid on sub−horizon scales and takes a top−hat perturbation to exist in an otherwise featureless cosmos and follows its evolution into the non−linear regime where it reaches a maximum size and then recollapses. collapse provides the user with the linear−collapse threshold (delta_c) and the virial overdensity (Delta_v) for the collapsed halo over a range of cosmic scale factors.

Credit: Mead, Alexander


Bibcode: 2018ascl.soft02014M

ID: ascl:1802.014

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