Continuous gravitational wave searches with pulsar timing arrays: Maximization versus marginalization over pulsar phase parameters

被引：7

作者：

Wang, Yan ^{[1
]}

Mohanty, Soumya D. ^{[2
]}

Qian, Yi-Qian ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Phys, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China

[2] Univ Texas Rio Grande Valley, Dept Phys, One West Univ Blvd, Brownsville, TX 78520 USA

来源：

11TH INTERNATIONAL LISA SYMPOSIUM | 2017年 / 840卷

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

D O I：

10.1088/1742-6596/840/1/012058

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Resolvable Supermassive Black Hole Binaries are promising sources for Pulsar Timing Array based gravitational wave searches. Search algorithms for such targets must contend with the large number of so-called pulsar phase parameters in the joint log-likelihood function of the data. We compare the localization accuracy for two approaches: Maximization over the pulsar phase parameters (MaxPhase) against marginalization over them (AvPhase). Using simulated data from a pulsar timing array with 17 pulsars, we find that for weak and moderately strong signals, AvPhase outperforms MaxPhase significantly, while they perform comparably for strong signals.

引用

页数：2

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