Nonlinear corrections of overlap reduction functions for pulsar timing arrays
文献类型：期刊论文
| 作者 | Zhu, Qing-Hua |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2023 |
| 卷号 | 107期号:10页码:103519 |
| 关键词 | GRAVITATIONAL-RADIATION WAVES SPECTRUM SEARCH |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.107.103519 |
| 英文摘要 | Recent pulsar timing array experiments have reported a hint of gravitational stochastic background in nHz band frequency. Further confirmation might rely on whether the signature of the signals is consistent with that sketched by overlap reduction functions, known as Hellings-Downs curves. This paper investigates the nonlinear corrections of overlap reduction functions in the presence of non-Gaussianity, in which the self-interaction of gravity is first taken into account. Expanding Einstein field equations and geodesic equations into the nonlinear regime, we obtain nonlinear corrections for the timing residuals of pulsar timing, and theoretically study the overlap reduction functions for pulsar timing arrays. In the event of considerable correction from the three-point correlations of gravitational waves, the shapes of the overlap reduction functions with nonlinear corrections can be differentiated from Hellings-Downs curves. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/28033]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Qing-Hua. Nonlinear corrections of overlap reduction functions for pulsar timing arrays[J]. PHYSICAL REVIEW D,2023,107(10):103519. |
| APA | Zhu, Qing-Hua.(2023).Nonlinear corrections of overlap reduction functions for pulsar timing arrays.PHYSICAL REVIEW D,107(10),103519. |
| MLA | Zhu, Qing-Hua."Nonlinear corrections of overlap reduction functions for pulsar timing arrays".PHYSICAL REVIEW D 107.10(2023):103519. |
入库方式： OAI收割
来源：理论物理研究所
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