Rotational behaviors and magnetic field evolution of radio pulsars | |
Xie, Y.1,2; Zhang, S. -N.1,3,4 | |
刊名 | ASTRONOMISCHE NACHRICHTEN |
2014-08-01 | |
卷号 | 335期号:6-7页码:775-781 |
关键词 | magnetic fields pulsars: general stars: neutron |
英文摘要 | The observed long-term spin-down evolution of isolated radio pulsars cannot be explained by the standard magnetic dipole radiation with a constant braking torque. However, how and why the torque varies remains still controversial, an outstanding problem in our understanding of neutron stars. We have constructed a phenomenological model of the evolution of surface magnetic fields of pulsars which contains a long-term decay modulated by short-term oscillations; a pulsar's spin is thus modified by its magnetic field evolution. The predictions of this model agree with the precisely measured spin evolution of several individual pulsars. The derived parameters suggest that the Hall drift and Hall waves in neutron star crusts are probably responsible for the long-term change and short-term quasi-periodical oscillations, respectively. Many statistical properties of the timing noise of pulsars can well be reproduced with this model, including correlations and the distributions of the observed braking indices of the pulsars which span over a range of more than 100 millions. We have also presented a phenomenological model for the recovery processes of classical and slow glitches which can successfully model the observed slow and classical glitch events without biases. (C) 2014 WILEY-VCH Verlag GmbH&Co.KGaA, Weinheim |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000343759800036 |
内容类型 | 期刊论文 |
源URL | [http://ir.bao.ac.cn/handle/114a11/6454] |
专题 | 国家天文台_空间科学研究部 |
作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 4.Univ Alabama, Dept Phys, Huntsville, AL 35899 USA |
推荐引用方式 GB/T 7714 | Xie, Y.,Zhang, S. -N.. Rotational behaviors and magnetic field evolution of radio pulsars[J]. ASTRONOMISCHE NACHRICHTEN,2014,335(6-7):775-781. |
APA | Xie, Y.,&Zhang, S. -N..(2014).Rotational behaviors and magnetic field evolution of radio pulsars.ASTRONOMISCHE NACHRICHTEN,335(6-7),775-781. |
MLA | Xie, Y.,et al."Rotational behaviors and magnetic field evolution of radio pulsars".ASTRONOMISCHE NACHRICHTEN 335.6-7(2014):775-781. |
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