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| The drifting subpulse and nulling of PSR B0820+02 observed with FAST | |
Zhi, Qijun1,2; Xu, Xin1,2; Shang, Lunhua1,2; Bai, Juntao3; Dang, Shijun1,2 ; Lu, Jiguang4,5; Dai, Shi6; Zhao, Rushuang1,2; Wen, Zhigang3,7,8; Qiao, Guojun9; Dong, Aijun1,2
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| 2023 | |
| Source Publication | Monthly Notices of the Royal Astronomical Society
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| ISSN | 0035-8711 |
| Volume | 520Issue:1Pages:1332-1338 |
| Contribution Rank | 3 |
| Abstract | 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. |
| Keyword | pulsars: individual: B0820+02 frequency evolution behavior empirical-theory pulsar emission mode modulation dependence discovery carousel origin Astronomy & Astrophysics |
| Subtype | Article |
| DOI | 10.1093/mnras/stad235 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000937053400011 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/6659 |
| Collection | 射电天文研究室_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 |
| Corresponding Author | Zhi, Qijun |
| Affiliation | 1.Guizhou Normal University, Guiyang 550001, China; 2.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang 550001, China; 3.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China; 4.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; 5.Guizhou Radio Astronomy Observatory, Chinese Academy of Sciences, Guiyang 550001, China; 6.School of Science, Western Sydney University, Locked Bag 1797, Penrith South DC, NSW 2751, Australia; 7.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China; 8.Xinjiang Key Laboratory of Radio Astrophysics, Urumqi, Xinjiang 830011, China; 9.School of Physics, Peking University, Beijing 100871, China |
| Recommended Citation 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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| Zhi-2023-The driftin（993KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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