首页|Investigating the neutron star physics through observations of several young pulsars in the dipole-field re-emergence scenario
Investigating the neutron star physics through observations of several young pulsars in the dipole-field re-emergence scenario
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
万方数据
Investigating the neutron star physics through observations of several young pulsars in the dipole-field re-emergence scenario
The observed timing data,magnetic tilt anglex,and age of young pulsars could be used to probe some important issues about neutron star(NS)physics,e.g.,the NS internal magnetic field configuration,and the number of precession cycles ξ.Both quan-tities are critical in studying the continuous gravitational wave emission from pulsars,and the latter generally characterizes the mutual interactions between superfluid neutrons and other particles in the NS interior.The timing behavior of pulsars can be influenced by the dipole field evolution,which instead of decaying,may increase with time.An increase in the dipole field may result from the re-emergence of the initial dipole field Bd.i that was buried into the NS interior shortly after the birth of the NS.In this work,the field re-emergence scenario ξ and the internal field configuration of several young pulsars,as well as their Bd,i are investigated by assuming typical accreted masses ΔM.Moreover,since the Crab pulsar has an exactly known age and its tilt angle change rate can be inferred from observations,we can set stringent constraints on itsξ,Bd.i,and ΔM.Although for other young pulsars without exactly known ages and tilt angle change rates,these quantities cannot be accurately determined,we find that their f are generally within～104-106,and some of them probably have magnetar-strength Bd.i.Our work could be important for investigating the transient emissions associated with NSs,the origin of strong magnetic fields of NSs,pulsar population,continuous gravitational wave emission from pulsars,and accretion under extreme conditions in principle.
pulsarneutron starmagnetic field
Yu-Long Yan、Quan Cheng、Xiao-Ping Zheng
展开 >
Institute of Astrophysics,Central China Normal University,Wuhan 430079,China
Department of Astronomy,Huazhong University of Science and Technology,Wuhan 430074,China
万方数据
