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
Evolution of Spin Period and Magnetic Field of the Crab Pulsar: Decay of the Braking Index by the Particle Wind Flow Torque

文献类型：期刊论文

作者Zhang, Cheng-Min7,8,9; Cui, Xiang-Han7,9; Li, Di5,6,7,9; Wang, De-Hua4; Wang, Shuang-Qiang3; Wang, Na3; Zhang, Jian-Wei9; Peng, Bo7,9; Zhu, Wei-Wei7,9; Yang, Yi-Yan2
刊名UNIVERSE
出版日期2022-12-01
卷号8期号:12页码:20
关键词pulsars general pulsars individual PSR B0531 + 21 (the Crab pulsar) stars neutron supernovae
DOI10.3390/universe8120628
通讯作者Zhang, Cheng-Min(zhangcm@bao.ac.cn)
英文摘要The evolutions of a neutron star's rotation and magnetic field (B-field) have remained unsolved puzzles for over half a century. We ascribe the rotational braking torques of pulsar to both components, the standard magnetic dipole radiation (MDR) and particle wind flow (MDR + Wind, hereafter named MDRW), which we apply to the Crab pulsar (B0531 + 21), the only source with a known age and long-term continuous monitoring by radio telescope. Based on the above presumed simple spin-down torques, we obtain the exact analytic solution on the rotation evolution of the Crab pulsar, together with the related outcomes as described below: (1) unlike the constant characteristic B-field suggested by the MDR model, this value for the Crab pulsar increases by a hundred times in 50 kyr while its real B-field has no change; (2) the rotational braking index evolves from similar to 3 to 1 in the long-term, however, it drops from 2.51 to 2.50 in similar to 45 years at the present stage, while the particle flow contributes approximately 25% of the total rotational energy loss rate; (3) strikingly, the characteristic age has the maximum limit of similar to 10 kyr, meaning that it is not always a good indicator of a real age. Furthermore, we discussed the evolutionary path of the Crab pulsar from the MDR to the wind domination by comparing with the possible wind braking candidate pulsar PSR J1734-3333.
WOS关键词MULTIPOLAR ELECTROMAGNETIC-FIELDS ; ROTATING NEUTRON-STARS ; YOUNG PULSARS ; TIMING NOISE ; UPPER LIMIT ; ORIGIN ; EMISSION ; MAGNETOSPHERE ; BINARY ; NEBULA
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
出版者MDPI
WOS记录号WOS:000902921800001
源URL[http://ir.xao.ac.cn/handle/45760611-7/5002]  
专题脉冲星研究团组
通讯作者Zhang, Cheng-Min
作者单位1.Xiangtan Univ, Sch Phys, Xiangtan 533001, Peoples R China
2.Guizhou Educ Univ, Sch Phys & Elect Sci, Guiyang 550018, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
4.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China
5.Zhejiang Lab, Res Ctr Intelligent Comp Platforms, Hangzhou 311100, Peoples R China
6.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa
7.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
8.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
9.Chinese Acad Sci, CAS Key Lab FAST, Natl Astron Observ, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Cheng-Min,Cui, Xiang-Han,Li, Di,et al. Evolution of Spin Period and Magnetic Field of the Crab Pulsar: Decay of the Braking Index by the Particle Wind Flow Torque[J]. UNIVERSE,2022,8(12):20.
APA Zhang, Cheng-Min.,Cui, Xiang-Han.,Li, Di.,Wang, De-Hua.,Wang, Shuang-Qiang.,...&Pan, Yuan-Yue.(2022).Evolution of Spin Period and Magnetic Field of the Crab Pulsar: Decay of the Braking Index by the Particle Wind Flow Torque.UNIVERSE,8(12),20.
MLA Zhang, Cheng-Min,et al."Evolution of Spin Period and Magnetic Field of the Crab Pulsar: Decay of the Braking Index by the Particle Wind Flow Torque".UNIVERSE 8.12(2022):20.

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。