Complete Zeldovich approximation

Details Complete Zeldovich approximation Complete Zeldovich approximation

2000-03-31

arxiv.org/abs/astro-ph/0003482v1

Astrophys.J. 534 (2000) L117

Astronomy and Astrophysics

Astrophysics

11 pages+1 figure, accepted in ApJ Letters

Scientific paper

10.1086/312679

We have developed a generalization of the Zeldovich approximation (ZA) that is exact in a wide variety of situations, including plannar, spherical and cilyndrical symmetries. We have shown that this generalization, that we call complete Zeldovich approximation (CZA), is exact to second order at an arbitrary point within any field. For gaussian fields, the third order error have been obtained and shown to be very small. For statistical purposes, the CZA leads to results exact to the third order.

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