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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
WOS记录号WOS:000902921800001
出版者MDPI
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.

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来源：新疆天文台

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