THE QUASI-GAUSSIAN DENSITY-VELOCITY RELATIONSHIP

被引：48

作者：

BERNARDEAU, F

机构：

[1] Service de Physique Théorique, CE Saclay, F-91191, Gif-sur-Yvette

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 390卷 / 02期

关键词：

COSMOLOGY; THEORY; LARGE-SCALE STRUCTURE OF THE UNIVERSE;

D O I：

10.1086/186372

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We derive the exact relationship between the density and the divergence of the velocity field, including all nonlinear features, in the case of an infinitely small variance. The result is found to be very close to [GRAPHICS] where delta(v) is the divergence of the velocity field (in units of H0). However, possible departures may appear due to the smoothing procedures used in practical determinations of this relationship. This correction is specified for the quadratic term and is seen to be small.

引用

页码：L61 / L64

页数：4

共 12 条

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