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PSR B0943+10: Mode Switch, Polar Cap Geometry, and Orthogonally Polarized Radiation

文献类型：期刊论文

作者Cao, Shunshun10; Jiang, Jinchen9; Dyks, Jaroslaw8; Hao LF(郝龙飞)6,7; Lee, Kejia5,9,10; Li ZX(李志玄)6,7; Lu, Jiguang4,9; Pan, Zhichen2,3,9; Wang, Weiyang2; Wang, Zhengli1
刊名ASTROPHYSICAL JOURNAL
出版日期2024-09-01
卷号973期号:1
ISSN号0004-637X
DOI10.3847/1538-4357/ad60c5
产权排序第4完成单位
文献子类Article
英文摘要As one of the paradigm examples to probe into pulsar magnetospheric dynamics, PSR B0943+10 (J0946+0951) manifests representatively, showing a mode switch, orthogonal polarization, and subpulse drifting, frequently studied below 600 MHz. Here, both integrated and single pulses are studied at a high frequency (1.25 GHz) with FAST. The mode switch is studied using a profile decomposition method. A phase space evolution for the pulsar's mode switch shows a strange-attractor-like pattern. The radiative geometry is proposed by fitting polarization position angles with the rotating vector model. The pulsar pulse profile is then mapped to the sparking locations on the pulsar surface, and the differences between the main pulse's and the precursor component's radiative processes may explain the X-ray's synchronization with radio mode switch. Detailed single pulse studies on B0943+10's orthogonally polarized radiation are presented, which may support certain models of radiative transfer of polarized emission. In particular, the difference in orthogonal polarization modes' circular polarization might reflect the cyclotron absorption in pulsar magnetospheres. B0943+10's B and Q modes evolve differently with frequency and have different proportions of orthogonal modes, which indicates possible magnetospheric changes during mode switch. For Q mode pulse profile, the precursor and the main pulse components are orthogonally polarized, and are probably originated from different depths in the magnetosphere. The findings could impact significantly on the pulsar electrodynamics and the radiative mechanism related.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词DRIFTING SUBPULSE EMISSION ; X-RAY ; RADIO PULSARS ; LOW-FREQUENCY ; MEAN PROFILES ; GAMMA-RAY ; TOPOLOGY ; PROPAGATION ; DISCOVERY ; PERIODICITY
资助项目National SKA Program of China[2020SKA0120100]; National Natural Science Foundation of China[12003047]; National Natural Science Foundation of China[11703047]; National Natural Science Foundation of China[11773041]; National Natural Science Foundation of China[U2031119]; National Natural Science Foundation of China[12133003]; National Natural Science Foundation of China[12173052]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0550300]; Youth Innovation Promotion Association of CAS[Y2022027]; CAS Light of West China Program; National Key R&D Program of China[2022YFC2205202]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001314699300001
出版者IOP Publishing Ltd
资助机构National SKA Program of China[2020SKA0120100] ; National Natural Science Foundation of China[12003047, 11703047, 11773041, U2031119, 12133003, 12173052] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0550300] ; Youth Innovation Promotion Association of CAS[Y2022027] ; CAS Light of West China Program ; National Key R&D Program of China[2022YFC2205202]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27613]  
专题云南天文台_射电天文研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning 530004, People's Republic of China
2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China;
3.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China;
4.Guizhou Radio Astronomical Observatory, Guiyang 550025, People's Republic of China;
5.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China;
6.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
7.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
8.Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Rabiańska 8, 87-100, Toruń, Poland;
9.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China; jiangjinchen@bao.ac.cn;
10.Department of Astronomy, School of Physics, Peking University, Beijing 100871, People's Republic of China; kjlee@pku.edu.cn, r.x.xu@pku.edu.cn;
推荐引用方式
GB/T 7714		 Cao, Shunshun,Jiang, Jinchen,Dyks, Jaroslaw,et al. PSR B0943+10: Mode Switch, Polar Cap Geometry, and Orthogonally Polarized Radiation[J]. ASTROPHYSICAL JOURNAL,2024,973(1).
APA Cao, Shunshun.,Jiang, Jinchen.,Dyks, Jaroslaw.,郝龙飞.,Lee, Kejia.,...&Xu, Renxin.(2024).PSR B0943+10: Mode Switch, Polar Cap Geometry, and Orthogonally Polarized Radiation.ASTROPHYSICAL JOURNAL,973(1).
MLA Cao, Shunshun,et al."PSR B0943+10: Mode Switch, Polar Cap Geometry, and Orthogonally Polarized Radiation".ASTROPHYSICAL JOURNAL 973.1(2024).

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来源：云南天文台

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