A STATISTIC FOR DESCRIBING PULSAR AND CLOCK STABILITIES
A STATISTIC FOR DESCRIBING PULSAR AND CLOCK STABILITIES
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DOI:
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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
中科院分区:
文献类型:
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作者:
D. Matsakis;J. Taylor;T. Eubanks
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.