中国物理B ›› 2008, Vol. 17 ›› Issue (1): 356-361.doi: 10.1088/1674-1056/17/1/062

• GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS • 上一篇    

Modification of gravitational redshift of x-ray burst produced by pulsar surface magnetoplasma

祝俊, 季沛勇   

  1. Department of Physics, Shanghai University, Shanghai 200444, China
  • 出版日期:2008-01-20 发布日期:2008-01-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10573012) and the Shanghai Leading Academic Discipline Program, China (Grant No T0104).

Modification of gravitational redshift of x-ray burst produced by pulsar surface magnetoplasma

Zhu Jun(祝俊)† and Ji Pei-Yong(季沛勇)   

  1. Department of Physics, Shanghai University, Shanghai 200444, China
  • Online:2008-01-20 Published:2008-01-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10573012) and the Shanghai Leading Academic Discipline Program, China (Grant No T0104).

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摘要： In this paper, the propagation of x-ray bursts in the magnetoplasma of pulsar magnetosphere is discussed. The electromagnetic interaction between x-ray bursts and magnetoplasma is described as some geometry. The electromagnetic effects of surface superstrong magnetic field and dynamic effects of outflowing magnetoplasma of pulsars are treated as an optical metric. The Gordon metric is introduced to represent the gravitational metric and optical metric. So the propagation of x-ray bursts in magnetoplasma of pulsars can be described as x-ray bursts transmitting in an effective space characterized by Gordon metric. The modification of gravitational redshift, attributed to the flowing magnetoplasma of pulsars, is obtained and it is shown that the modification is of redshift and can reach the same magnitude as the gravitational redshift for ordinary pulsars.

Abstract: In this paper, the propagation of x-ray bursts in the magnetoplasma of pulsar magnetosphere is discussed. The electromagnetic interaction between x-ray bursts and magnetoplasma is described as some geometry. The electromagnetic effects of surface superstrong magnetic field and dynamic effects of outflowing magnetoplasma of pulsars are treated as an optical metric. The Gordon metric is introduced to represent the gravitational metric and optical metric. So the propagation of x-ray bursts in magnetoplasma of pulsars can be described as x-ray bursts transmitting in an effective space characterized by Gordon metric. The modification of gravitational redshift, attributed to the flowing magnetoplasma of pulsars, is obtained and it is shown that the modification is of redshift and can reach the same magnitude as the gravitational redshift for ordinary pulsars.

Key words: pulsars, x-ray spectra, relativity and gravitation, redshift

中图分类号:  (Pulsars)

  • 97.60.Gb
95.30.Sf (Relativity and gravitation) 94.30.cq (MHD waves, plasma waves, and instabilities) 94.30.Tz (Electromagnetic wave propagation) 94.30.Ms (Magnetic pulsations) 94.30.Va (Magnetosphere interactions)