以往邀请报告
以往邀请报告

位置: 首页 > 以往邀请报告 > 2014秋季 > 正文

Timing noise of radio pulsars and implications to neutron star's interior structure and gravitational wave detection
主讲人 主持人
时间 2014-10-22 17:06:01 报告题目
首作者 People
职称 联系电话
邮箱 研究方向
主讲人简介 地点
办公室 研究院 中科院高能所/国家天文台
日期: 
2014/10/22        
People: 
张双南
Institute: 
中科院高能所/国家天文台

Radio pulsars are the most stable natural clocks in the universe, yet timing noises can still be substantial when the times of arrivals of their pulses are fitted with some well accepted spin-down models or templates of pulsars. In this talk, I will review our recent work on modeling the timing noises of radio pulsars. Our model includes a long-term power-law decay modulated by periodic oscillations of the surface magnetic fields of neutron stars, which can explain the statistical properties of their timing noises. We find that the spin-down evolutions of young and old pulsars are dominated by the power-law decay and periodic oscillations, respectively. By applying our model to the individual spin-down evolutions of many well-measured radio pulsars, we find evidence for Hall drifts and Hall waves in the crusts of neutron stars. Finally we also attempt to improve the sensitivity of detecting gravitational waves with pulsars by applying our model to reduce the timing residuals of millisecond radio pulsars.

上一条:暂停

下一条:TBD