Bispectrum and the trispectrum of the Ostriker-Vishniac effect

被引：17

作者：

Castro, PG ^{[1
]}

机构：

[1] Univ Oxford, Oxford OX1 3RH, England

来源：

PHYSICAL REVIEW D | 2003年 / 67卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.67.123001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present analytical expressions for the Fourier analogue of the cosmic microwave background three-point and four-point correlation functions, the spatial bispectrum and trispectrum, of the Ostriker-Vishniac effect in the linear and mildly nonlinear regime. Through this systematic study, we illustrate a technique to tackle the calculation of such statistics making use of the effects of its small-angle and vectorlike properties through the Limber approximation. Finally we discuss its configuration dependence and detectability in the context of Gaussian theories for the currently favored flat LambdaCDM cosmology.

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页数：19

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