具有多物理特性的X射线脉冲星信号模拟

doi:10.3969/j.issn.1001-2400.2016.05.032

Abstract

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^-7s, the error between the simulation and the real data being just only 10^-7s, 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.

Key words: X-ray pulsar, signal simulation, period and spectral property, the background noise property, time transformation

SHEN Lirong;LI Xiaoping;LIU Yanming;FANG Haiyan;SUN Haifeng;PEI Chenxing. Simulation of X-ray pulsar signals with multiphysical properties[J].Journal of Xidian University, 2016, 43(5): 183-189.

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Simulation of X-ray pulsar signals with multiphysical properties

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