Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...299..154g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 299, Dec. 1, 1985, p. 154-160. Research supported by the Polska Akademia Na
Astronomy and Astrophysics
Astrophysics
32
Pulsars, Radio Emission, Stellar Magnetic Fields, Stellar Models, Magnetic Field Configurations, Pulsar Magnetospheres, Stellar Rotation
Scientific paper
An analysis is presented of a number of pulsar observations of pulse shapes and pulse component separations that help constrain possible geometries of emission regions in pulsar magnetosphere. It is argued that pulsar emission is organized into two distinct beams, inner and outer, originating at widely different radii and corresponding to the same locus of the magnetic field lines on the polar cap. This hypothesis is consistent with the properties of interpulse emission as well as the complexity of the mean profiles. Interpulses can be explained by a single-pole model where the line of sight intersects the inner beam near the surface for the main pulse and the outer beam at a substantial fraction of the light cylinder to produce the interpulse. At the interpulse emission radius the field lines would be bent backward from the strict corotation position, thus causing the separation between the interpulse and the main pulse to be smaller than 180 deg.
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