Inverse Compton gamma-ray from pulsars. I - The VELA pulsar

Astronomy and Astrophysics – Astronomy

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Compton Effect, Gamma Ray Astronomy, Photons, Pulsars, Stellar Radiation, Black Body Radiation, Magnetospheres, Relativistic Electron Beams, Synchrotron Radiation

Scientific paper

A model is proposed for pulsar optical and gamma-ray emission where relativistic electrons beams: (1) scatter the blackbody photons from the polar cap surface giving inverse Compton gamma-rays and (2) produce synchrotron optical photons in the light cylinder region which are then inverse Compton scattered giving other gamma-rays. The model is applied to the Vela pulsar, explaining the first gamma-ray pulse by inverse Compton scattering of synchrotron photons near the light cylinder and the second gamma-ray pulse partly by inverse Compton scattering of synchrotron photons and partly by inverse Compton scattering of the thermal blackbody photons near the star surface.

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