中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 新疆天文台
  3. 研究单元未命名
  4. 射电天文研究室
  5. 脉冲星研究团组
Studying the nulling, subpulse drifting, and moding in PSR J1921+1948 with the FAST

文献类型：期刊论文

作者Shang, Lunhua4,5,6; Bai, Juntao2,3; Xu, Xin1,5,6; Dang, Shijun5,6; Wang, Shuangqiang2,3; Dong, Aijun5,6; Pang, Lijun6; Yu, Yan5,6; Li, Qingying5,6
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2024-02-15
卷号528期号:4页码:6388-6397
关键词stars: magnetic fields stars: neutron pulsars: individual: PSR J1921+1948
ISSN号0035-8711
DOI10.1093/mnras/stae408
产权排序4
英文摘要We reported the observations of nulling, subpulse drifting, and moding of radio radiation in pulsar (PSR) B1918+19 at 1250 MHz with the Five-hundred-meter Aperture Spherical radio Telescope. The nulling fraction is 2.6 +/- 0.1 per cent and no periodicity of nulling can be seen. We confirmed the existence of three different drift modes (A, B, C) and a disordered mode (N) at 1250 MHz. Unlike the other three modes where the second component of the average pulse profile dominates, the first component of the average pulse profile in mode C is brighter than the other components, the second component shifts forward and the fourth component shifts backward. The bidrifting phenomenon is observed in PSR B1918+19, the drifting of the first and second components is positive, and the drift direction of the fourth component is negative. The drifting rate of the drift bands composed of the first and second components has an obvious evolutionary trend. Mode B has a short duration and no clear trend can be seen. But for mode A, the drift rate of each drift band starts relatively fast, then slows down to a steady state, and finally increases slowly until it enters either null or mode N. Further analysis shows that the emergence and significant variation in the drifting period of multidrifting subpulse emission modes for PSR B1918+19 may be due to the aliasing effect. The interesting subpulse emission phenomenon of PSR B1918+19 at different frequencies provides a unique opportunity to understand the switching mechanism of the multidrift mode of the pulsars.
WOS关键词MULTICOMPONENT GAUSSIAN FITS ; INNER ACCELERATION REGION ; SURFACE MAGNETIC-FIELD ; SINGLE-PULSE EMISSION ; EMPIRICAL-THEORY ; GEOMETRICAL ANALYSIS ; RADIO-EMISSION ; MODEL ; MODULATION ; PROFILES
资助项目Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-3] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-4] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[[2022]B18] ; Academic New Seedling Fund Project of Guizhou Normal University[[2022]137] ; Academic New Seedling Fund Project of Guizhou Normal University[[2022]132] ; Scientific Research Project of the Guizhou Provincial Education[ZK[2022]304] ; Guizhou Provincial Science and Technology Foundation[12203092] ; Guizhou Provincial Science and Technology Foundation[12363005] ; National Natural Science Foundation of China (NSFC) project[2022D01B71] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2020SKA0120100] ; National SKA Program of China ; Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001169271500011
出版者OXFORD UNIV PRESS
资助机构Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; Academic New Seedling Fund Project of Guizhou Normal University ; Scientific Research Project of the Guizhou Provincial Education ; Guizhou Provincial Science and Technology Foundation ; National Natural Science Foundation of China (NSFC) project ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National SKA Program of China ; Chinese Academy of Sciences
源URL[http://ir.xao.ac.cn/handle/45760611-7/6466]  
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Shang, Lunhua; Bai, Juntao; Dang, Shijun
作者单位1.Guizhou Normal Univ, Sch Math Sci, Guiyang 550001, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100101, Peoples R China
5.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Peoples R China
6.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China
推荐引用方式
GB/T 7714		 Shang, Lunhua,Bai, Juntao,Xu, Xin,et al. Studying the nulling, subpulse drifting, and moding in PSR J1921+1948 with the FAST[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,528(4):6388-6397.
APA Shang, Lunhua.,Bai, Juntao.,Xu, Xin.,Dang, Shijun.,Wang, Shuangqiang.,...&Li, Qingying.(2024).Studying the nulling, subpulse drifting, and moding in PSR J1921+1948 with the FAST.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,528(4),6388-6397.
MLA Shang, Lunhua,et al."Studying the nulling, subpulse drifting, and moding in PSR J1921+1948 with the FAST".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 528.4(2024):6388-6397.

入库方式： OAI收割

来源：新疆天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。