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Disentangling the cosmic web. I. Morphology of isodensity contours

Schmalzing, Jens, Buchert, Thomas, Melott, Adrian L., Sahni, Varun, Sathyaprakash, Bangalore Suryanarayana and Shandarin, Sergei F. 1999. Disentangling the cosmic web. I. Morphology of isodensity contours. Astrophysical Journal 526 (2) , pp. 568-578. 10.1086/308039

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We apply Minkowski functionals and various derived measures to decipher the morphological properties of large-scale structure seen in simulations of gravitational evolution. Minkowski functionals of isodensity contours serve as tools to test global properties of the density field. Furthermore, we identify coherent objects at various threshold levels and calculate their partial Minkowski functionals. We propose a set of two derived dimensionless quantities, planarity and filamentarity, which reduce the morphological information in a simple and intuitive way. Several simulations of the gravitational evolution of initial power-law spectra provide a framework for systematic tests of our method.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: large-scale structure of universe ; methods:numerical ; methods:statistical
Publisher: IOP Publishing
ISSN: 0004-637X
Last Modified: 04 Jun 2017 04:52

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