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State-switching Mechanism of Intermittent Pulsars

文献类型：期刊论文

作者Rusul, Abdujappar1; Zheng, Xiao-Ping2; Esamdin, Ali3; Guo, Liang1; Xia, Li-Xin1
刊名ASTROPHYSICAL JOURNAL
出版日期2021-03-01
卷号909期号:1页码:68
关键词Pulsars Neutron stars
ISSN号0004-637X
DOI10.3847/1538-4357/abdb37
产权排序3
英文摘要The emission feature of intermittent pulsars is significant for understanding the pulsar emission mechanism. Using the observational evidence of radio emissions turning on and off and the corresponding spin-down rates in these two states of an intermittent pulsar, we will examine the polar-cap potential drop, gap height, and curvature radii of a few intermittent pulsars within the regime of the pulsar polar-cap emission theory by applying the current loss and energy flux of particle flow to pulsar braking, which are generally associated with radio emission from the polar cap. It is seen that the polar-cap parameters of the intermittent pulsars are almost equal to their maximum values, which is the main prediction of the pulsar polar-cap theory with respect to the breaking of the radio emission. It is also noticed that the intermittent pulsars are distributed near the dipole death line in the P-(P)over dot diagram, which is consistent with their emission features and the calculated polar-cap parameters. To further confirm the state switching of the intermittent pulsar, the relationships among spin-down rate, gap height, potential drop, and activity duty cycles of PSR B1931+24 are discussed. It is found that the gap height has an anticorrelation with the activity duty cycle, which indicates that the intermittency of the radio emission has a close connection to the gap height, as indicated by the pulsar polar-cap emission theory.
资助项目University Research Natural Science Foundation of Xinjiang Uighur Autonomous Region, China[XJEDU2017S041] ; National Natural Science Foundation of China (NSFC)[11773011] ; National Natural Science Foundation of China (NSFC)[12033001] ; National SKA Program of China[2020SKA0120300] ; Natural Science Foundation of Xinjiang Uighur Autonomous Region, China[2017D01B02] ; Natural Science Foundation of Xinjiang Uighur Autonomous Region, China[2016D01A015] ; Natural Science Foundation of Xinjiang Uighur Autonomous Region, China[2017D01A10] ; Key Laboratory of Quark and Lepton Physics (MOE) of Central China Normal University[QLPL2019P01 (QLPL201901)]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000626425900001
出版者IOP PUBLISHING LTD
资助机构University Research Natural Science Foundation of Xinjiang Uighur Autonomous Region, China ; National Natural Science Foundation of China (NSFC) ; National SKA Program of China ; Natural Science Foundation of Xinjiang Uighur Autonomous Region, China ; Key Laboratory of Quark and Lepton Physics (MOE) of Central China Normal University
源URL[http://ir.xao.ac.cn/handle/45760611-7/3874]  
专题新疆天文台_光学天文与技术应用研究室
通讯作者Rusul, Abdujappar; Zheng, Xiao-Ping
作者单位1.Kashi Univ, Inst Phys & Elect Engn, Kashgar 844009, Peoples R China
2.Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Rusul, Abdujappar,Zheng, Xiao-Ping,Esamdin, Ali,et al. State-switching Mechanism of Intermittent Pulsars[J]. ASTROPHYSICAL JOURNAL,2021,909(1):68.
APA Rusul, Abdujappar,Zheng, Xiao-Ping,Esamdin, Ali,Guo, Liang,&Xia, Li-Xin.(2021).State-switching Mechanism of Intermittent Pulsars.ASTROPHYSICAL JOURNAL,909(1),68.
MLA Rusul, Abdujappar,et al."State-switching Mechanism of Intermittent Pulsars".ASTROPHYSICAL JOURNAL 909.1(2021):68.

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来源：新疆天文台

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