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Investigation of Interstellar Scintillation of the Millisecond Pulsar B1937+21 with the FAST

文献类型：期刊论文

作者Wen, Zhigang2; Wang, Hui3; Wang, Zhen2,5; Yuan, Jianping2; Wang, Na2; Yan, Wenming2; Han, Wei2; Duan, Xuefeng2; Wang, Honguang1; He, Pengcheng4
刊名ASTROPHYSICAL JOURNAL
出版日期2025-10-10
卷号992期号:1页码:10
ISSN号0004-637X
DOI10.3847/1538-4357/ae0452
通讯作者Wang, Hui(wanghuiycu@163.com)
英文摘要Pulsar scintillation serves as a valuable tool for investigating interstellar scattering screens and their properties. In this paper, we report on multiepoch interstellar scintillation from the millisecond pulsar B1937+21 (J1939+2134) using Five-hundred-meter Aperture Spherical radio Telescope (FAST) observations at 1250 MHz with 500 MHz bandwidth. The diffractive scintillation properties are investigated for an observing baseline of 3 yr. The scintillation timescale, exponential index, and decorrelation bandwidth are determined to be 7.67 +/- 1.61 minutes, 1.54 +/- 0.09, and 0.56 +/- 0.25 MHz, respectively, from the autocorrelation functions of the dynamic spectra. These scintillation parameters are found to vary temporally. The frequency dependencies of scintillation parameters exhibit single-power spectral behaviors; however, the derived spectral indices deviate from the theoretical Kolmogorov spectrum. The fringe pattern that forms from interference of scattered waves is revealed in the secondary spectrum as a parabolic arc with a well-determined curvature of 0.95 +/- 0.50 s3. The parabolic arc is present contemporaneously over a wide frequency range and scales with frequency as a power law with an index of -0.80 +/- 0.18, indicating the broadband nature of the scintillation arc. The arc curvature exhibits annual variation and is well approximated by a one-dimensional scattering screen located approximately 95% of the distance toward the pulsar. These findings will contribute to a deeper understanding of the underlying physics of the ionized interstellar medium.
WOS关键词SCATTERING DELAY ; PARABOLIC ARCS ; PRECISION ; PROPAGATION ; DISPERSION ; ARRAY
资助项目MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[2022YFC2205203] ; National Key Research and Development Program of China[2022A03013-1] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[12303053] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[12288102] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[12041301] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[12203094] ; National Natural Science Foundation of China[2023069] ; Youth Innovation Promotion Association of CAS[2023TSYCCX0100] ; Tianshan Talent Training Program[2023TSYCTD0013] ; Tianshan Talent Program of Xinjiang Uygur autonomous region, China[2024D01B88] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001590356700001
出版者IOP Publishing Ltd
资助机构MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166 ; National Key Research and Development Program of China ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Tianshan Talent Training Program ; Tianshan Talent Program of Xinjiang Uygur autonomous region, China ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences
源URL[http://ir.xao.ac.cn/handle/45760611-7/8238]  
专题脉冲星研究团组
通讯作者Wang, Hui
作者单位1.Guangzhou Univ, Sch Phys & Elect Engn, Guangzhou 510006, Guangdong, Peoples R China
2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
3.Yuncheng Univ, Shanxi Prov Intelligent Optoelect Sensing Applicat, Yuncheng 044000, Shanxi, Peoples R China
4.Anhui Univ Sci & Technol, Sch Ming Engn, Huainan 232001, Anhui, Peoples R China
5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wen, Zhigang,Wang, Hui,Wang, Zhen,et al. Investigation of Interstellar Scintillation of the Millisecond Pulsar B1937+21 with the FAST[J]. ASTROPHYSICAL JOURNAL,2025,992(1):10.
APA Wen, Zhigang.,Wang, Hui.,Wang, Zhen.,Yuan, Jianping.,Wang, Na.,...&Lyu, Chengbing.(2025).Investigation of Interstellar Scintillation of the Millisecond Pulsar B1937+21 with the FAST.ASTROPHYSICAL JOURNAL,992(1),10.
MLA Wen, Zhigang,et al."Investigation of Interstellar Scintillation of the Millisecond Pulsar B1937+21 with the FAST".ASTROPHYSICAL JOURNAL 992.1(2025):10.

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