The phase-resolved high energy spectrum of the crab pulsar

被引：6
|
作者：
Jia, J. J. [1 ]
Tang, Anisla P. S. [1 ]
Takata, J. [2 ]
Chang, H. K. [3 ,4 ]
Cheng, K. S. [1 ]
机构：
[1] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[2] Natl Tsing Hua Univ, ASIAA, TIARA, Taipei, Taiwan
[3] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan
[4] Natl Tsing Hua Univ, Inst Astron, Hsinchu 30013, Taiwan
来源：
ADVANCES IN SPACE RESEARCH | 2007年 / 40卷 / 10期
关键词：
neutron stars; pulsars; radiation mechanism; radiation processes;
D O I：
10.1016/j.asr.2007.02.076
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
We present a modified outer gap model to study the phase-resolved spectra of the Crab pulsar. A theoretical double peak profile of the light curve containing the whole phase is shown to be consistent with the observed light curve of the Crab pulsar by shifting the inner boundary of the outer gap inwardly to similar to 10 stellar radii above the neutron star surface. In this model, the radial distances of the photons corresponding to different phases can be determined in the numerical calculation. Also the local electrodynamics, such as the accelerating electric field, the curvature radius of the magnetic field line and the soft photon energy, are sensitive to the radial distances to the neutron star. Using a synchrotron self-Compton mechanism, the phase-resolved spectra with the energy range from 100 eV to 3 GeV of the Crab pulsar can also be explained. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1425 / 1431
页数：7
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