Correcting for the solar wind in pulsar timing observations: the role of simultaneous and low-frequency observations | |
Dai, Shi1; Niu, Ze-Xi4; Hobbs, George1; Wang, Jing-Bo2,3 | |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
2017-09-01 | |
卷号 | 17期号:10页码:103 |
关键词 | Stars: Pulsars Gravitational Waves |
ISSN号 | 1674-4527 |
DOI | 10.1088/1674-4527/17/10/103 |
产权排序 | 3 |
文献子类 | Article |
英文摘要 | The primary goal of pulsar timing array projects is to detect ultra-low-frequency gravitational waves. Pulsar data sets are affected by numerous noise processes including varying dispersive delays in the interstellar medium and from the solar wind. The solar wind can lead to rapidly changing variations that, with existing telescopes, can be hard to measure and then remove. In this paper we study the possibility of using a low frequency telescope to aid in such correction for the Parkes Pulsar Timing Array (PPTA) and also discuss whether the ultra-wide-bandwidth receiver for the FAST telescope is sufficient to model solar wind variations. Our key result is that a single wide-bandwidth receiver can be used to model and remove the effect of the solar wind. However, for pulsars that pass close to the Sun such as PSR J1022+1022, the solar wind is so variable that observations at two telescopes separated by a day are insufficient to correct the solar wind effect. |
URL标识 | 查看原文 |
WOS关键词 | Electron-density ; Dispersion ; Package ; Tempo2 ; Array |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
WOS记录号 | WOS:000415007500004 |
资助机构 | West Light Foundation of CAS(XBBS201322) ; National Natural Science Foundation of China(11403086, U1431107) ; Strategic Priority Research Programme (B) of the Chinese Academy of Sciences(XDB23010200) ; Center for Astronomical Mega-Science, Chinese Academy of Sciences |
内容类型 | 期刊论文 |
源URL | [http://ir.xao.ac.cn/handle/45760611-7/1762] |
专题 | 脉冲星研究团组 新疆天文台_射电天文研究室 |
通讯作者 | Wang, Jing-Bo |
作者单位 | 1.CSIRO, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 4.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China |
推荐引用方式 GB/T 7714 | Dai, Shi,Niu, Ze-Xi,Hobbs, George,et al. Correcting for the solar wind in pulsar timing observations: the role of simultaneous and low-frequency observations[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(10):103. |
APA | Dai, Shi,Niu, Ze-Xi,Hobbs, George,&Wang, Jing-Bo.(2017).Correcting for the solar wind in pulsar timing observations: the role of simultaneous and low-frequency observations.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(10),103. |
MLA | Dai, Shi,et al."Correcting for the solar wind in pulsar timing observations: the role of simultaneous and low-frequency observations".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.10(2017):103. |
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