Modelling the high energy emission of pulsars

Astronomy and Astrophysics – Astrophysics

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Scientific paper

To date, seven gamma-ray pulsars are known, showing pulsed emission up to tens of GeV and associated light-curves with a double-pulse structure. We study this pulsed high-energy emission in the framework of the striped wind model. By numerical integration of the time-dependent emissivity in the current sheets, we compute the phase-dependent spectral variability of the inverse Compton radiation. Several light curves and spectra are presented. Pulses are a direct consequence of relativistic beaming. Our model is able to explain some of the high-energy (10 MeV-10 GeV) spectral features and behavior of several gamma-ray pulsars, like Geminga and Vela.

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