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Pulsed γ-ray properties of Crab pulsar in a retarded dipole with a current-induced magnetic field

Pulsed γ-ray properties of Crab pulsar in a retarded dipole with a current-induced magnetic field
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摘要 Motivated by the Fermi observations of some γ-ray pulsars in which the phases of radio and γ-ray peaks are almost the same, we investigate the outer gap model in a retarded dipole with a current-induced magnetic field and apply it to explain pulsed γ-ray properties of the Crab pulsar. Our results show that the observed γ-ray energy-dependent light curves, which almost align with the radio light curve and phase averaged spectrum for the Crab pulsar, are reproduced well. Motivated by the Fermi observations of some γ-ray pulsars in which the phases of radio and γ-ray peaks are almost the same, we investigate the outer gap model in a retarded dipole with a current-induced magnetic field and apply it to explain pulsed γ-ray properties of the Crab pulsar. Our results show that the observed γ-ray energy-dependent light curves, which almost align with the radio light curve and phase averaged spectrum for the Crab pulsar, are reproduced well.
出处 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2015年第12期2229-2236,共8页 天文和天体物理学研究(英文版)
基金 partially supported by the National Natural Science Foundation of China(Grant Nos.11173020 and 11433004) the Top Talents Program of Yunnan Province
关键词 gamma rays: theory -- pulsars: general -- pulsars: individual (Crab) --stars: neutron gamma rays: theory -- pulsars: general -- pulsars: individual (Crab) --stars: neutron
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