毫秒脉冲星在时间计量中的可能应用  

Possible Application of Millisecond Pulsar to Time Metrology

作　　者：潘炼德 

机构地区：[1]中国科学院陕西天文台,陕西省临潼710600

出　　处：《陕西天文台台刊》2001年第1期1-8,共8页Publications of The Shaanxi Astronomical Observatiory

摘　　要：在分析射电脉冲星的自转和时间尺度的基本特性及其相互之间的关系的基础上 ,讨论了毫秒脉冲星在时间工作中的可能应用。基于毫秒脉冲星的到达时间的测量 ,经过必要的时空转换、改正及参数拟合 ,可以建立脉冲星时及综合脉冲星时。虽然脉冲星时及综合脉冲星时对原子时有所依赖 ,但它们 ,特别是综合脉冲星时 ,可以用来将原子时的准确度从一个时段传递到另一个时段 ,并可用来分析原子时的长期稳定度。另外 。The essential characteristics of the pulsar spinning and of the time scales,and the relation between them are analysed. The possible application of the millisecond pulsar to the time metrology is discussed. Based on the measurements of the arrival times of the radio pulses emitted from the millisecond pulsar(s),pulsar time and ensemble pulsar time can be established after the necessary time space transformation,correction and parameters fitting are applied to the measurements.It is possible for pulsar time,especially for ensemble pulsar time,to transfer the accuracy of atomic time from one period to another.It is also possible that pulsar time,especially ensemble pulsar time,may contribute to the knowledge of the stability of atomic time,although there is a dependence of pulsar time(and ensemble pulsar time)on atomic time. In addition, a binary pulsar time can be defined based on the orbital phase of a pulsar in a binary system.

关 键 词：时间频率 时间尺度 射电脉冲星 毫秒脉冲星 

分 类 号：P145.6[天文地球—天体物理] TB939[天文地球—天文学]