Optimal strategies for gravitational wave stochastic background searches in pulsar timing data

被引：174

作者：

Anholm, Melissa ^{[1
]}

Ballmer, Stefan ^{[2
]}

Creighton, Jolien D. E. ^{[1
]}

Price, Larry R. ^{[1
]}

Siemens, Xavier ^{[1
]}

机构：

[1] Univ Wisconsin, Ctr Gravitat & Cosmol, Dept Phys, Milwaukee, WI 53201 USA

[2] CALTECH, LIGO Lab, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW D | 2009年 / 79卷 / 08期

基金：

美国国家科学基金会;

关键词：

RADIATION; COALESCENCE; LIMITS; TOOL;

D O I：

10.1103/PhysRevD.79.084030

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A low frequency stochastic background of gravitational waves may be detected by pulsar timing experiments in the next 5 to 10 yr. Using methods developed to analyze interferometric gravitational wave data, in this paper we lay out the optimal techniques to detect a background of gravitational waves using a pulsar timing array. We show that for pulsar distances and gravitational wave frequencies typical of pulsar timing experiments, neglecting the effect of the metric perturbation at the pulsar does not result in a significant deviation from optimality. We discuss methods for setting upper limits using the optimal statistic, show how to construct skymaps using the pulsar timing array, and consider several issues associated with realistic analysis of pulsar timing data.

引用

页数：19

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