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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.9; Zhi, Q. J.8,10; Coles, W. A.7; Li, D.4,5,6; Zhu, W. W.5,6; Hobbs, G.3; Qiao, G. J.2; Wang, N.1; Yuan, J. P.1
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2022-05-03
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
DOI10.1093/mnras/stac918
通讯作者Dai, S.(shi.dai@westernsydney.edu.au) ; Zhi, Q. J.(qjzhi@gznu.edu.cn)
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.
WOS关键词MILLISECOND PULSAR ; ORBITAL EVOLUTION ; GIANT PULSES ; SOLAR-WIND ; BINARY ; DISCOVERY ; SCINTILLATION ; PROPAGATION ; VARIABILITY ; NEBULA
资助项目Australian Research Council Discovery Early Career Award - Australian Government[DE210101738] ; CAS program[114A11KYSB20210010] ; National Natural Science Foundation of China (NSFC)[11988101] ; National Natural Science Foundation of China (NSFC)[U1731238] ; National Natural Science Foundation of China (NSFC)[1156510] ; National Natural Science Foundation of China (NSFC)[11703047] ; National Natural Science Foundation of China (NSFC)[11773041] ; National Natural Science Foundation of China (NSFC)[U2031119] ; National Natural Science Foundation of China (NSFC)[1217052] ; National Natural Science Foundation of China (NSFC)[11725313] ; Foundation of Science and Technology of Guizhou Province[(2016)4008] ; Foundation of Science and Technology of Guizhou Province[(2017)5726-37] ; Foundation of Guizhou Provincial Education Department[KY(2020)003] ; CAS 'Light of West China' Program ; Guizhou Provincial Science and Technology Foundation[ZK[2022]304]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000790937200002
资助机构Australian Research Council Discovery Early Career Award - Australian Government ; CAS program ; National Natural Science Foundation of China (NSFC) ; Foundation of Science and Technology of Guizhou Province ; Foundation of Guizhou Provincial Education Department ; CAS 'Light of West China' Program ; Guizhou Provincial Science and Technology Foundation
源URL[http://ir.xao.ac.cn/handle/45760611-7/4627]  
专题恒星形成与演化研究团组
通讯作者Dai, S.; Zhi, Q. J.
作者单位1.Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
2.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
3.CSIRO Space & Astron, POB 76, Epping, NSW 1710, Australia
4.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
7.Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA
8.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Peoples R China
9.Western Sydney Univ, Sch Sci, Locked Bag 1797, Penrith, NSW 2751, Australia
10.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R 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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