Computer Science – Performance
Scientific paper
Apr 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.191..237k&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 191, Apr. 1980, p. 237-242.
Computer Science
Performance
15
Polar Caps, Pulsars, Radio Emission, Stellar Models, Magnetic Field Configurations, Performance Prediction, Radio Telescopes, Relativistic Particles
Scientific paper
Though both the polar cap and the relativistic beaming models explain the basic phenomenon of drifting subpulses, it is shown that the two models predict different tracks for subpulses in the longitude versus pulse-number diagram. Since this offers a means of distinguishing between the two models, the Ooty radio telescope has been used to observe PSR 0031-07, which shows strong drifting-subpulse behaviour. The observed dependence of the slope of subpulse bands on the longitude of the subpulse agrees better with the prediction of the relativistic beaming model than that of the polar cap model. Furthermore, it is shown that the known subpulse behaviour of a few other pulsars also agrees with what is expected from the relativistic beaming model. The predictions of the polar cap model can be made compatible with the observations only if a clear physical basis is found for the speeds of the subpulse-producing sparks to depend on their position on the polar cap.
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