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Detection of strong scattering close to the eclipse region of PSR B1957+20

文献类型：期刊论文

作者Bai, J. T.10; Dai, S.1; Zhi, Q. J.2,10; Coles, W. A.9; Li, D.6,7,8; Zhu, W. W.7,8; Hobbs, G.5; Qiao, G. J.4; Wang, N.3; Yuan, J. P.3
刊名Monthly Notices of the Royal Astronomical Society
出版日期2022-05-01
卷号513期号:2页码:1794-1800
ISSN号0035-8711
关键词scattering binaries: eclipsing pulsars: general pulsars: individual: PSR B1957+20 millisecond pulsar orbital evolution giant pulses solar-wind binary discovery scintillation propagation variability nebula Astronomy & Astrophysics
DOI10.1093/mnras/stac918
产权排序10
文献子类Article
英文摘要We present the first measurement of pulse scattering close to the eclipse region of PSR B1957+20, which is in a compact binary system with a low-mass star. We measured pulse scattering time-scales up to 0.2 ms close to the eclipse and showed that it scales with the dispersion measure (DM) excess roughly as tau proportional to Delta DM2. Our observations provide the first evidence of strong scattering due to multipath propagation effects in the eclipsing material. We show that Kolmogorov turbulence in the eclipsing material with an inner scale of similar to 100 m and an outer scale of the size of the eclipse region can naturally explain the observation. Our results show that the eclipsing material in such systems can be highly turbulent and suggest that scattering is one of the main eclipsing mechanisms at around 1.4 GHz.
URL标识查看原文
语种英语
WOS记录号WOS:000790937200002
源URL[http://ir.xao.ac.cn/handle/45760611-7/5125]  
专题脉冲星研究团组
科研仪器设备产出_我台利用FAST观测数据文章
作者单位1.School of Science, Western Sydney University, Locked Bag 1797, Penrith South DC, NSW 2751, Australia;
2.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang 550001, China;
3.Xinjiang Astronomical Observatory, 150, Science-1 Street, Urumqi, 830011 Xinjiang, People’s Republic of China
4.School of Physics, Peking University, Beijing 100871, People’s Republic of China;
5.CSIRO Space and Astronomy, PO Box 76, Epping, NSW 1710, Australia;
6.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa;
7.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China;
8.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China;
9.Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA;
10.School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, People’s Republic of China;
推荐引用方式
GB/T 7714		 Bai, J. T.,Dai, S.,Zhi, Q. J.,et al. Detection of strong scattering close to the eclipse region of PSR B1957+20[J]. Monthly Notices of the Royal Astronomical Society,2022,513(2):1794-1800.
APA Bai, J. T..,Dai, S..,Zhi, Q. J..,Coles, W. A..,Li, D..,...&Miao, C. C..(2022).Detection of strong scattering close to the eclipse region of PSR B1957+20.Monthly Notices of the Royal Astronomical Society,513(2),1794-1800.
MLA Bai, J. T.,et al."Detection of strong scattering close to the eclipse region of PSR B1957+20".Monthly Notices of the Royal Astronomical Society 513.2(2022):1794-1800.

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