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A hierarchy of voids

Published online by Cambridge University Press:  06 October 2004

Rien van de Weygaert ,
Ravi Sheth  and
Erwin Platen
Rien van de Weygaert
Affiliation:
Kapteyn Instituut, Rijksuniversiteit Groningen, the Netherlands
Ravi Sheth
Affiliation:
Dept. of Physics and Astronomy, University of Pittsburgh, USA NASA/Fermilab Astrophysics Group, Batavia, IL 60510-0500, USA
Erwin Platen
Affiliation:
Kapteyn Instituut, Rijksuniversiteit Groningen, the Netherlands
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Abstract

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We present a model for the distribution of void sizes and its evolution within the context of hierarchical scenarios of gravitational structure formation. For a proper description of the hierarchical buildup of the system of voids in the matter distribution, not only the void-in-void problem should be taken into account, but also that of the void-in-cloud issue. Within the context of the excursion set formulation of an evolving void hierarchy is one involving a two-barrier excursion problem, unlike the one-barrier problem for the dark halo evolution. This leads to voids having a peaked size distribution at any cosmic epoch, centered on a characteristic void size that evolves self-similarly in time, in distinct contrast to the distribution of virialized halo masses in not having a small-scale cut-off.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUC195 , March 2004 , pp. 58 - 63
Copyright
© 2004 International Astronomical Union