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Research on Millisecond Pulsars’ Time Scale and Clock Model

Author: ZhuXingZhi
Tutor: ChenDing
School: Graduate School , Chinese Academy of Sciences ( National Time Service Center )
Course: Astrometry and celestial mechanics
Keywords: Millisecond pulsars Time scale Comprehensive pulsar Clock model Time prediction.
CLC: P145.6
Type: Master's thesis
Year: 2011
Downloads: 67
Quote: 0
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Abstract


The pulsar is a rapidly rotating neutron stars , extremely stable rotation period , especially millisecond pulsars , millisecond pulsars cycle stability of the high , the nature and quantum frequency standard comparable to a natural frequency source , is no need to maintain the natural clock , is expected and than on the system when the ground atomic frequency standard . The millisecond pulsars inherent internal disturbance is small , very stable rotation of millisecond pulsars pulse reaches the measurement of time became an important observational study , the feasibility of providing for the establishment of an independent pulsar time standards . This article provides an overview of the basic properties of the pulsar , pulsar timing of the observation process , focus on the time scale of millisecond pulsars , the results show that when the the pulsar clock and pulsars , millisecond pulse fortune for ordinary pulsars more suitable for timing and navigation applications . Using俄罗斯普西诺Radio Observatory about the pulsar Geminga low frequency timing observations , research and analysis of the radio pulse signal , and compared with previous results and discussion . Briefly discusses the the the the pulsar timing processing software Tempo2 denoising process before the residuals fit , as well as the residual fitting analysis methods , through the simulation time-scale The results after Tempo2 processing , analysis to study the processing method to establish the standard pulsar the time scale of the impact . The pulsar clock modeling methods and use the latest forecast software Polyco of millisecond pulsar J1857 0943 12h pulse arrival phase and pulsar rotation frequency forecast , its latest ephemeris epoch beginning and ending time the end partition period forecast , to discuss the accuracy of the clock model forecasts , verify the millisecond pulsar rotation frequency drift , and make error analysis . Australian National Radio Astronomy Observatory telescope center PARKES four millisecond pulsar timing observations about ten years , for the first time more than two the pulsar measured data to establish a comprehensive pulsar assess its stability and related to atomic time scale comparative analysis , improve integrated pulsar discussed a variety of factors , and integrated millisecond pulsar time scale of future value and significance .

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CLC: > Astronomy,Earth Sciences > Astronomy > Astrophysics > Stellar physics > Pulsars ( neutron stars )
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