正常脉冲星计时噪声的研究进展

发布时间：2018-06-09 01:33

本文选题：脉冲星 + 计时噪声　；参考：《天文学进展》2016年02期

【摘要】：脉冲星自转的稳定性是其最显著的特征之一,利用这种特征可以提供脉冲星自身自转减慢的精确信息,研究强引力场中的广义相对论效应,检验引力波,探测太阳系外行星,以及提供计时标准。然而,在脉冲星自转的长期观测中,两种有趣的不规则性被观测到,这其中把广泛存在于脉冲星中且最为普遍的现象称为"计时噪声",多表现为相当连续且不稳定的行为,并且多由低频结构组成。对于具有较大周期导数的脉冲星而言,通常会具有更加明显的计时噪声。全面地研究计时噪声有助于深入了解中子星的内部结构。在回顾分析脉冲星自转减慢模型的基础上,对近年来脉冲星计时噪声的观测进展进行了概述。针对现有的观测数据,讨论了目前关于计时噪声分类以及观测制动指数中存在的问题。另外,介绍和评述了脉冲星计时噪声的相关理论模型。最后,展望了未来观测方面的发展方向和前景。
[Abstract]:The stability of pulsar's rotation is one of its most remarkable characteristics, which can provide accurate information of pulsar's own slow rotation, study the general relativistic effect in strong gravitational field, examine gravitational waves, and detect extrasolar planets. And provide timing standards. However, in the long term observations of pulsar rotation, two interesting irregularities have been observed, in which the most common phenomenon widely found in pulsars is called "timing noise", which is usually characterized by fairly continuous and unstable behavior. And most of them are composed of low frequency structure. For pulsars with large periodic derivatives, the timing noise is usually more obvious. A comprehensive study of timing noise is helpful to understand the inner structure of neutron stars. Based on the retrospect and analysis of pulsar rotation deceleration model, the recent progress of pulsar timing noise observation is summarized. Based on the existing observation data, the problems existing in the classification of timing noise and the observed braking index are discussed. In addition, the related theoretical models of pulsar timing noise are introduced and reviewed. Finally, the development direction and prospect of observation in the future are prospected.
【作者单位】：北京师范大学天文系;中国科学院国家天文台;中国科学院高能物理研究所;
【基金】：973项目(2014CB845802,2014CB845700,2013CB834900) 国家自然科学基金(11133002,11373036) 国家千人计划启动基金(292012312D1117210) 中国科学院战略先导专项(XDB09000000) 国家自然科学基金委员会和中国科学院天文联合基金重点项目(U1231202)
【分类号】：P145.6;P127.1

【相似文献】