摘要
近年来随着脉冲星观测设备性能提升,尤其是中国FAST的投入运行,毫秒脉冲星的计时观测精度不断提高,观测资料的数量、质量及时效性也显著改善,为脉冲星时的建立及应用提供有力的数据及技术支持。脉冲星时与原子时具有优势互补的特点,利用中国科学院国家授时中心的铯钟和相关时频设备,结合IPTA dr2数据资料,建立脉冲星驾驭铯钟的实验系统。并以J0613-0200为参考,开展单颗毫秒脉冲星驾驭铯钟的研究。截止目前,实验结果符合单颗毫秒脉冲星驾驭铯钟的预期,证明了脉冲星驾驭原子钟的可行性,并且实验系统建立的综合时间尺度保持了铯钟稳定度的优势。
In recent years,with the improvement of the performance of pulsar observation equipment,especially the operation of China’s FAST,the precision of millisecond pulsar timing observations has been continuously improved.The quantity,quality and timeliness of observation data have also been significantly improved,providing strong data and technical support for the establishment and application of pulsar time.Pulsar time and atomic time have complementary advantages.An experimental platform for pulsars to control the cesium clock is established using the cesium clock and related time-frequency equipment in National Time Service Center of the Chinese Academy of Sciences,and IPTA dr2 data.Research on steering the cesium clock by the single millisecond pulsar is carried out based on J0613-0200 steering a cesium clock.Up to now,the experimental results meet the expectation of a single millisecond pulsar steering a cesium clock,showing the feasibility of a pulsar driving an atomic clock.The integrated time scale obtained from the experimental system maintains the advantage of the cesium clock stability.
作者
李变
屈俐俐
高玉平
LI Bian;QU Lili;GAO Yuping(National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China;Key Laboratory of Time and Frequency Primary Standards,Chinese Academy of Sciences,Xi’an 710600,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《航空学报》
EI
CAS
CSCD
北大核心
2023年第3期210-217,共8页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金(11873049,11873050,11973046,U1831130)
国家SKA专项(2020SKA0120103)。
关键词
毫秒脉冲星
铯钟
驾驭
计时噪声
稳定度
millisecond pulsar
cesium clock
steering
timing noise
stability
