Probing the Interstellar Medium from Scintillation of the Swooshing Pulsar B0919+06
文献类型：期刊论文
| 作者 | Wang, Z.1 ; Wen, Z. G.1; Yuan, J. P.1; Wang, N.1; Wang, Z.1,3; Chen, J. L.4; Wang, H. G.1,5; Han, W.1; Wang, H.4; Duan, X. F.1
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2024-06-01 |
| 卷号 | 968期号:2页码:109 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad46f4 |
| 产权排序 | 1 |
| 英文摘要 | Radio observations of pulsars offer a potential method to probe the intricate microstructure in the turbulent interstellar medium. Here we report on a high-resolution dynamic spectral analysis of the "swooshing pulsar" B0919+06 observed with the Five-hundred-meter Aperture Spherical radio Telescope over multiple epochs and with the ultrawideband receiver on the Parkes radio telescope. For all observations, the dynamic scintillation spectra, two-dimensional autocovariance functions, and secondary spectra are presented. At 1250 MHz, the decorrelation bandwidth, diffraction timescale, and the drift rate are determined to be Delta nu d = 25.89 +/- 7.55 MHz, Delta tau d = 14.42 +/- 3.98 minutes, and dt / d nu = 0.07 +/- 0.14 minutes MHz-1, respectively. The frequency dependencies of the scintillation parameters exhibit single power-law spectral behaviors, indicating that the electron density fluctuations in the interstellar medium approximately follow the Kolmogorov spectrum. The secondary spectra exhibit two distinct parabolic arcs with well-determined curvatures of 0.002 and 0.02 s3 for the outer and inner arcs, respectively. The locations of the scattering screens are approximately determined to be 157.3 and 726.0 pc, respectively, from the pulsar for isotropic scattering. The inner scintillation arc is present contemporaneously over a wide frequency range, indicating that the scintillation arc is a broadband phenomenon. The arc curvature scales with observing frequency as a power law with an index of -2.05 +/- 0.05, which implies that the scattering screen spans a physical distance from 689.7 to 883.3 pc from the pulsar. |
| WOS关键词 | PARABOLIC ARCS ; SCATTERING ; ARRAY |
| 资助项目 | National Key Research and Development Program of China[2022YFC2205203] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-1] ; National Natural Science Foundation of China (NSFC)[12303053] ; National Natural Science Foundation of China (NSFC)[12288102] ; National Natural Science Foundation of China (NSFC)[12041301] ; National Natural Science Foundation of China (NSFC)[12041304] ; National Natural Science Foundation of China (NSFC)[U1838109] ; National Natural Science Foundation of China (NSFC)[12203094] ; Key Laboratory in Xinjiang Uygur Autonomous Region of China[2023D04058] ; Chinese Academy of Sciences Foundation of the western young scholars[2020-XBQNXZ-019] ; The 2021 project Xinjiang Uygur autonomous region of China for Tianshan elites ; Youth Innovation Promotion Association of CAS[2023069] ; Tianshan Talent Training Program[2023TSYCCX0100] ; Natural Science Foundation of Shanxi Province[20210302123083] ; Xinjiang Uygur autonomous region of China for flexibly fetching in upscale talents ; CAS Light of West China Program[2019-XBQNXZ-B-019] ; Australian Government |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001249463000001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key Research and Development Program of China ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China (NSFC) ; Key Laboratory in Xinjiang Uygur Autonomous Region of China ; Chinese Academy of Sciences Foundation of the western young scholars ; The 2021 project Xinjiang Uygur autonomous region of China for Tianshan elites ; Youth Innovation Promotion Association of CAS ; Tianshan Talent Training Program ; Natural Science Foundation of Shanxi Province ; Xinjiang Uygur autonomous region of China for flexibly fetching in upscale talents ; CAS Light of West China Program ; Australian Government |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6804]  |
| 专题 | 脉冲星研究团组 射电天文研究室_数字技术实验室 科研仪器设备产出_我台利用FAST观测数据文章 |
| 通讯作者 | Wen, Z. G. |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci-1 St, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 3.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Xinjiang, Peoples R China 4.Yuncheng Univ, Yuncheng 044000, Peoples R China 5.Guangzhou Univ, Sch Phys & Elect Engn, Guangzhou, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Z.,Wen, Z. G.,Yuan, J. P.,et al. Probing the Interstellar Medium from Scintillation of the Swooshing Pulsar B0919+06[J]. ASTROPHYSICAL JOURNAL,2024,968(2):109. |
| APA | Wang, Z..,Wen, Z. G..,Yuan, J. P..,Wang, N..,Wang, Z..,...&Wu, Z. W..(2024).Probing the Interstellar Medium from Scintillation of the Swooshing Pulsar B0919+06.ASTROPHYSICAL JOURNAL,968(2),109. |
| MLA | Wang, Z.,et al."Probing the Interstellar Medium from Scintillation of the Swooshing Pulsar B0919+06".ASTROPHYSICAL JOURNAL 968.2(2024):109. |
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来源：新疆天文台
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