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Detecting super-Nyquist-frequency gravitational waves using a pulsar timing array
Yi SX(易疏序); Zhang SN(张双南); Yi, SX; Zhang, SN
2016
发表期刊SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
卷号59期号:8
通讯作者张双南
文章类型Article
摘要The maximum frequency of gravitational waves (GWs) detectable with traditional pulsar timing methods is set by the Nyquist frequency (f(Ny)) of the observation. Beyond this frequency, GWs leave no temporal-correlated signals; instead, they appear as white noise in the timing residuals. The variance of the GW-induced white noise is a function of the position of the pulsars relative to the GW source. By observing this unique functional form in the timing data, we propose that we can detect GWs of frequency > f(Ny) (super-Nyquist frequency GWs; SNFGWs). We demonstrate the feasibility of the proposed method with simulated timing data. Using a selected dataset from the Parkes Pulsar Timing Array data release 1 and the North American Nanohertz Observatory for Gravitational Waves publicly available datasets, we try to detect the signals from single SNFGW sources. The result is consistent with no GW detection with 65.5% probability. An all-sky map of the sensitivity of the selected pulsar timing array to single SNFGW sources is generated, and the position of the GW source where the selected pulsar timing array is most sensitive to is lambda(s) = -0.82, beta(s) = -1.03 (rad); the corresponding minimum GW strain is h = 6.31 x 10(-11) at f = 1 x 10(-5) Hz.
关键词gravitational wave pulsar black hole
DOI10.1007/s11433-016-0095-2
关键词[WOS]BINARIES ; LIMITS
语种英语
WOS记录号WOS:000378818700013
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260685
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Yi SX,Zhang SN,Yi, SX,et al. Detecting super-Nyquist-frequency gravitational waves using a pulsar timing array[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2016,59(8).
APA 易疏序,张双南,Yi, SX,&Zhang, SN.(2016).Detecting super-Nyquist-frequency gravitational waves using a pulsar timing array.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,59(8).
MLA 易疏序,et al."Detecting super-Nyquist-frequency gravitational waves using a pulsar timing array".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 59.8(2016).
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