A STATISTIC FOR DESCRIBING PULSAR AND CLOCK STABILITIES

A STATISTIC FOR DESCRIBING PULSAR AND CLOCK STABILITIES
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发表时间:
1997-10
影响因子:
6.5
通讯作者:
D. Matsakis;J. Taylor;T. Eubanks
D. Matsakis;J. Taylor;T. Eubanks
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
D. Matsakis;J. Taylor;T. Eubanks

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我们提出了一个统计措施,适用于比较的旋转稳定性的恒星与彼此和与地球的时间尺度。通过对时钟社区长期使用的符号的简单扩展,我们称之为时钟()。定义在三阶多项式拟合测量的时间偏移序列,z()是敏感的时钟或脉冲星的频率漂移率的变化。我们将新的统计形式应用于真实的脉冲星数据和地球时间尺度,表明在过去的10年里,这两种数据具有可比的稳定性。
We propose a statistical measure suitable for com- paring the rotational stabilities of pulsars with one another and with terrestrial time scales. By a simple extension of notation long used in the clock community, we call the statisticz(�). Defined in terms of third-order polynomials fitted to sequences of measured time offsets, �z(�) is sensitive to variations in the frequency drift rate of the clock or pulsar. We apply the new sta- tistical formalism to real pulsar data and terrestrial time scales, and show that over the past 10 years these two kinds of data have comparable stabilities.