Marc Kamionkowski and Ari Buchalter 1999 ApJ 514 7 doi:10.1086/306950
Weakly Nonlinear Clustering for Arbitrary Expansion Histories
FREEMarc Kamionkowski1 and Ari Buchalter2
Show affiliationsBouchet et al. showed that in an open or closed universe with only pressureless matter, gravitational instability from Gaussian initial conditions induces a normalized skewness, S3≡
δ3
δ2−2, which has only a very weak dependence on the nonrelativistic matter density. Here we generalize this result to a plethora of models with various contributions to the total energy density, including nonrelativistic matter, a cosmological constant, and other forms of missing energy. Our numerical results show that the skewness (and bispectrum) depend only very weakly (
2%) on the expansion history. Thus the skewness and bispectrum provide a robust test of gravitational instability from Gaussian initial conditions, independent of the underlying cosmological model.
- Subject headings
cosmology: theory; galaxies: clusters: general; galaxies: statistics; large-scale structure of universe
- Dates
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Issue 1 (1999 March 20)
Received 1998 July 21, accepted for publication 1998 October 28
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Weakly Nonlinear Clustering for Arbitrary Expansion Histories
Marc Kamionkowski and Ari Buchalter 1999 ApJ 514 7
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-
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-
The Newtonian limit of Penrose's quasi-local mass
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-
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-
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-
The solution of transient heat flow and heat transfer problems by relaxation
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-
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-
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