The inverse Compton effect and emission from the Crab pulsar

Astronomy and Astrophysics – Astronomy

Scientific paper

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Compton Effect, Crab Nebula, Pulsars, Stellar Spectra, Infrared Astronomy, Light (Visible Radiation), Neutron Stars, Plasma Waves, Plasma-Particle Interactions, Relativistic Particles, Relativistic Velocity, Stellar Models, X Ray Sources

Scientific paper

The Compton emission mechanism is investigated for the Crab pulsar on the assumption that this mechanism operates in a source moving with relativistic velocity about the neutron star. Theoretical emission spectra resulting from Compton scattering of relativistic electrons by longitudinal (plasma) waves are matched with measured radiation fluxes from the Crab pulsar in the IR, visible, and X-ray regions. Parameters of the emission region are determined, including the source size, the energy density of the scattering waves, and the density and lifetime of the relativistic electrons. It is shown that a major difficulty in explaining the pulsar emission due to Compton scattering is the high plasma frequency (10 to 1000 GHz) in the source.

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