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
Investigating the Unique Drift Behavior of PSR B2110+27 with FAST

文献类型：期刊论文

作者Xu, Xin1,6; Zhi, Qijun1,4,6; Bai, Juntao3; Wen, Zhigang2,3; Yan, Wenming2,3; Tian, Jie1,4,6; Qiao, Guojun5; You, Ziyi1,4
刊名ASTROPHYSICAL JOURNAL
出版日期2024-06-01
卷号968期号:2页码:119
ISSN号0004-637X
DOI10.3847/1538-4357/ad4889
产权排序4
英文摘要Careful scrutiny of the single pulse emissions from PSR B2110+27 has been conducted through highly sensitive observations using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) at a central frequency of 1250 MHz. Our investigation revealed significant subpulse drift behavior and nulling in this pulsar. Moreover, we observed that the nulling events tend to be of short duration, with an estimated overall nulling fraction of approximately 27% +/- 3%. It is noteworthy that the drift direction of the subpulses exhibits abrupt changes, occasionally transitioning into a steady state or displaying a low drift rate. Analysis using longitude resolved fluctuation spectra indicates the presence of two distinct repetition periods for the pulsar: P 3 = (10.8 +/- 2.5)P and P 3 = (31.6 +/- 4.2)P, where P denotes the pulsar period. Our investigation revealed that the subpulse separation remains consistent across different drift patterns, with P 2 = 2.degrees 3 +/- 0.degrees 2. A more comprehensive analysis indicates that the unique drift behavior observed can be explained by a carousel model of the dipole field. Minor changes in P 2 and drift rate caused significant variations in the apparent P 3 and abrupt shifts in the drift direction, while the true repetition period (assuming first-order aliasing) changed by only similar to 10%. We observe a drift band memory and apparent phase memory across the null state in this pulsar, as well as variations in the drift rate and drift direction across the null state, though we have not detected significant periodicity of the nulling itself. This suggests that these phenomena may arise from random null pulses intersecting with the frequently aliased drift bands.
WOS关键词PULSAR EMISSION ; FREQUENCY-DEPENDENCE ; SUBPULSE MODULATION ; EMPIRICAL-THEORY ; RADIO-EMISSION ; GEOMETRY ; NULLS
资助项目The National Science Foundation of China ; Chinese Academy of Sciences[12273008] ; National Natural Science Foundation of China[2022SKA0130100] ; National Natural Science Foundation of China[2022SKA0130104] ; National SKA Program of China[[2023]024] ; Natural Science and Technology Foundation of Guizhou Province[(2020) 003] ; Foundation of Guizhou Provincial Education Department[2023] ; Guizhou Province Science and Technology Support Program (General Project)
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001250760300001
出版者IOP Publishing Ltd
资助机构The National Science Foundation of China ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National SKA Program of China ; Natural Science and Technology Foundation of Guizhou Province ; Foundation of Guizhou Provincial Education Department ; Guizhou Province Science and Technology Support Program (General Project)
源URL[http://ir.xao.ac.cn/handle/45760611-7/6794]  
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 Normal Univ, Guiyang 550001, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Urumqi, Xinjiang, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi, Xinjiang, Peoples R China
4.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China
5.Peking Univ, Sch Phys, Beijing, Peoples R China
6.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Xin,Zhi, Qijun,Bai, Juntao,et al. Investigating the Unique Drift Behavior of PSR B2110+27 with FAST[J]. ASTROPHYSICAL JOURNAL,2024,968(2):119.
APA Xu, Xin.,Zhi, Qijun.,Bai, Juntao.,Wen, Zhigang.,Yan, Wenming.,...&You, Ziyi.(2024).Investigating the Unique Drift Behavior of PSR B2110+27 with FAST.ASTROPHYSICAL JOURNAL,968(2),119.
MLA Xu, Xin,et al."Investigating the Unique Drift Behavior of PSR B2110+27 with FAST".ASTROPHYSICAL JOURNAL 968.2(2024):119.

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。