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Analysis of the Precision of Pulsar Time Clock Model

机译:脉冲真时钟模型精度分析

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摘要

Millisecond pulsars have a very high rotation stability, which can be applied to many research fields, such as the establishment of the pulsar time standard, the detection of gravitational wave, the spacecraft navigation by using X-ray pulsars and so on. In this paper, we employ two millisecond pulsars PSR J0437-4715 and J1713+0743, which are observed by the International Pulsar Timing Array (IPTA), to analyze the precision of pulsar clock parameter and the prediction accuracy of pulse time of arrival (TOA). It is found that the uncertainty of spin frequency is 10~(-15) Hz, the uncertainty of the first derivative of spin frequency is 10~(-23) s~(-2), and the precision of measured rotational parameters increases by one order of magnitude with the accumulated observational data every 4~5 years. In addition, the errors of TOAs within 4.8 yr which are predicted by the clock model established by the 10 yr data of J0437-4715 are less than 1 μs. Therefore, one can use the pulsar time standard to calibrate the atomic clock, and make the atomic time deviate from the TT (Terrestrial Time) less than 1 μs within 4.8 yr.
机译:毫秒脉冲条具有非常高的旋转稳定性,可以应用于许多研究领域,例如建立脉冲脉时间标准,通过使用X射线脉冲条件,通过X射线脉冲脉冲,航天器导航的检测。在本文中,我们采用了由国际脉冲节定时阵列(IPTA)观察到的两毫升Pulsars PSR J0437-4715和J1713 + 0743,以分析脉冲节时钟参数的精度和脉冲到达脉冲时间的预测精度(TOA )。发现旋转频率的不确定度为10〜(-15)Hz,旋转频率的第一衍生物的不确定度为10〜(-23)S〜(-2),测量旋转参数的精度增加每4〜5年累积的观察数据一级数量级。另外,由J0437-4715的10年的10年数据建立的时钟模型预测的4.8 YR内的TOA误差小于1μs。因此,人们可以使用脉冲条时间标准来校准原子钟,并使原子时间偏离小于1μs的TT(地面时间)在4.8毫秒内。

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