Rotational behaviors and magnetic field evolution of radio pulsars

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	Rotational behaviors and magnetic field evolution of radio pulsars
	Xie, Y; 张双南;Zhang, SN
刊名	ASTRONOMISCHE NACHRICHTEN
	2014
卷号	335 期号:6-7 SI 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
学科主题	Astronomy & Astrophysics
收录类别	SCI
WOS记录号	WOS:000343759800036
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224835]
专题	高能物理研究所_粒子天体物理中心
推荐引用方式 GB/T 7714	Xie, Y,张双南；Zhang, SN. Rotational behaviors and magnetic field evolution of radio pulsars[J]. ASTRONOMISCHE NACHRICHTEN,2014,335(6-7 SI):775-781.
APA	Xie, Y,&张双南；Zhang, SN.(2014).Rotational behaviors and magnetic field evolution of radio pulsars.ASTRONOMISCHE NACHRICHTEN,335(6-7 SI),775-781.
MLA	Xie, Y,et al."Rotational behaviors and magnetic field evolution of radio pulsars".ASTRONOMISCHE NACHRICHTEN 335.6-7 SI(2014):775-781.