Detecting super-Nyquist-frequency gravitational waves using a pulsar timing array
文献类型：期刊论文
| 作者 | Yi, Shu-Xu1,2; Zhang, Shuang-Nan1,3 |
| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 59期号:8 |
| 关键词 | gravitational wave pulsar black hole |
| 英文摘要 | 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000378818700013 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5308]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Div Space Sci, Natl Astron Observ China, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yi, Shu-Xu,Zhang, Shuang-Nan. Detecting super-Nyquist-frequency gravitational waves using a pulsar timing array[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2016,59(8). |
| APA | Yi, Shu-Xu,&Zhang, Shuang-Nan.(2016).Detecting super-Nyquist-frequency gravitational waves using a pulsar timing array.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,59(8). |
| MLA | Yi, Shu-Xu,et al."Detecting super-Nyquist-frequency gravitational waves using a pulsar timing array".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 59.8(2016). |
入库方式： OAI收割
来源：国家天文台
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