A radiation model for the VELA pulsar

Details A radiation model for the VELA pulsar A radiation model for the VELA pulsar

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..71...51d&link_type=abstract

Astrophysics and Space Science, vol. 71, no. 1, Aug. 1980, p. 51-63.

Astronomy and Astrophysics

Astrophysics

13

Gamma Rays, Light Emission, Pulsars, Radio Emission, Stellar Atmospheres, Stellar Models, Stellar Radiation, Magnetic Field Configurations, Magnetospheres, Optical Coupling, Plasma Pressure, Stellar Luminosity, Stellar Magnetic Fields

Scientific paper

The Vela emission in radio, optical and gamma wavelengths is modeled. It is assumed 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. The fitting of observed frequencies and luminosities in the gamma and optical gives reasonable plasma parameters, and indicates that field-plasma pressure balance breaks down before the light cylinder, as required by the picture. Some optical coherence is necessary if both radio and optical emission are attributed to the same species of particles, with gamma of about 100, but it is not required otherwise. Gamma-ray pulses arise from gamma = 100,000 electrons. A single-pole orthogonal rotor picture which might account for the Vela pulse phases is suggested.

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