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The drifting subpulse and nulling of PSR B0820+02 observed with FAST

文献类型：期刊论文

作者Zhi, Qijun1,9; Xu, Xin1,9; Shang, Lunhua1,9; Bai, Juntao8; Dang, Shijun1,9; Lu, Jiguang6,7; Dai, Shi5; Zhao, Rushuang1,9; Wen, Zhigang3,4,8; Qiao, Guojun2
刊名Monthly Notices of the Royal Astronomical Society
出版日期2023
卷号520期号:1页码:1332-1338
关键词pulsars: individual: B0820+02 frequency evolution behavior empirical-theory pulsar emission mode modulation dependence discovery carousel origin Astronomy & Astrophysics
ISSN号0035-8711
DOI10.1093/mnras/stad235
产权排序3
文献子类Article
英文摘要PSR B0820 + 02 is known to exhibit the subpulse drifting phenomenon, which carries vital information about the pulsar radiation process. In this work, we studied the subpulse drifting of PSR B0820 + 02 at a central frequency of 1250 MHz using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Thanks to the superior sensitivity of FAST, we found that PSR B0820 + 02 shows four distinct subpulse drifting modes (A, B, C, and D), the last three of which have not been reported before. The drifting periodicities of these four modes are found to be 4.3P(1), 6.4P(1), 8.2P(1), and 10.3P(1) (P-1 is the pulse period), respectively. No null pulse is found in our FAST observation. By comparing the energy distribution of single pulses of all four modes, we found that mode A has the highest energy and mode D has the lowest energy. Finally, we interpreted the drift modes in terms of the carousel model, and showed that if B0820 + 02's different drift modes are due to aliasing effects, the carousel rotation period of P-4 lies in the range 29P(1)-33P(1). The new subpulse drifting phenomena of PSR B0820 + 02 reported here provide a unique opportunity for understanding the mechanism and radiation geometry of pulsar radio radiation.
语种英语
WOS记录号WOS:000937053400011
源URL[http://ir.xao.ac.cn/handle/45760611-7/6659]  
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
通讯作者Zhi, Qijun
作者单位1.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang 550001, China;
2.School of Physics, Peking University, Beijing 100871, China
3.Xinjiang Key Laboratory of Radio Astrophysics, Urumqi, Xinjiang 830011, China;
4.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China;
5.School of Science, Western Sydney University, Locked Bag 1797, Penrith South DC, NSW 2751, Australia;
6.Guizhou Radio Astronomy Observatory, Chinese Academy of Sciences, Guiyang 550001, China;
7.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China;
8.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China;
9.Guizhou Normal University, Guiyang 550001, China;
推荐引用方式
GB/T 7714		 Zhi, Qijun,Xu, Xin,Shang, Lunhua,et al. The drifting subpulse and nulling of PSR B0820+02 observed with FAST[J]. Monthly Notices of the Royal Astronomical Society,2023,520(1):1332-1338.
APA Zhi, Qijun.,Xu, Xin.,Shang, Lunhua.,Bai, Juntao.,Dang, Shijun.,...&Dong, Aijun.(2023).The drifting subpulse and nulling of PSR B0820+02 observed with FAST.Monthly Notices of the Royal Astronomical Society,520(1),1332-1338.
MLA Zhi, Qijun,et al."The drifting subpulse and nulling of PSR B0820+02 observed with FAST".Monthly Notices of the Royal Astronomical Society 520.1(2023):1332-1338.

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