A radiation model for the vela pulsar

We model the Vela emission in radio, optical and gamma wavelengths. We assume that radio emission occurs near the polar axis deep in the magnetosphere. Optical and gamma radiation arises through ordinary synchrotron mechanisms in a wide hollow cone, near the light cylinder. Fitting of observed frequencies and luminosities in the gamma and optical give reasonable plasma parameters, and indicate that field-plasma pressure balance breaks down before the light cylinder, as required by the picture. Some optical coherence is necessary if we attribute both radio and optical emission to the same species of particles, with 100, but it is not required otherwise. Gamma-ray pulses arise from 10⁵ electrons. We suggest a single-pole orthogonal rotor picture which might account for the Vela pulse phases.