Vol 15, No 12 (2015) / Chang

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

Shan Chang, Li Zhang, Xiang Li

Abstract

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.

Keywords


gamma rays: theory — pulsars: general — pulsars: individual (Crab) — stars: neutron

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DOI: https://doi.org/10.1088/1674–4527/15/12/010

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