西安电子科技大学学报（自然科学版）2016，Vol.43Issue(5)：183-189,7.DOI:10.3969/j.issn.1001-2400.2016.05.032
具有多物理特性的X射线脉冲星信号模拟
Simulation of X-ray pulsar signals with multiphysical properties
摘要
Abstract
In view of the few and discontinuous X‐ray pulsar data , based on the physical properties of the X‐ray pulsar real data from the Rossi X‐ray Timing Explorer ( RXTE) spacecraft , this paper adopts the fast iterative method and the 10 μs time transformation model , simulates the X‐ray pulsar signals which have the periodic property , spectral property , and the background noise property as well as a variety of delay effects . We design and implement simulation software which can simulate the X‐ray pulsar signals with multi‐physical properties . The results of comparing the real data and simulation data in the same situation show that the simulation noises and the actual noises have the same distribution , that the period stability of the simulated X‐ray pulsar data agrees with the real data , with the error of only 0.43% , in different energy levels , that the simulated data's integrated profile and the real data's standard profile are highly correlated with the Pearson correlation coefficient of 0.99 , and that under the 10μs time transformation model , the time conversion accuracy of the simulation data can reach 10-7 s , the error between the simulation and the real data being just only 10-7 s , which meets the time transformation accuracy . Therefore , the proposed method can realize the high‐fidelity simulations and generate the continuous pulsar signal with many physical properties .关键词
X射线脉冲星/信号模拟/周期和能谱特性/背景噪声特性/时间转换Key words
X-ray pulsar/signal simulation/period and spectral property/the background noise property/time transformation分类
天文与地球科学引用本文复制引用
沈利荣,李小平,刘彥明,方海燕,孙海峰,裴辰星..具有多物理特性的X射线脉冲星信号模拟[J].西安电子科技大学学报（自然科学版）,2016,43(5):183-189,7.基金项目
国家基础研究计划（973计划）资助项目（2014CB340205）；国家自然科学基金资助项目 （）
