The geometries of the radio and gamma-ray emission beams of pulsars in the polar cap model

Details The geometries of the radio and gamma-ray emission beams of pulsars in the polar cap model The geometries of the radio and gamma-ray emission beams of pulsars in the polar cap model

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprk11008g&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

Recent studies of population statistics of radio and gamma-ray pulsars have indicated the importance of a more detailed description of the geometries of the radio and gamma-ray emission beams to properly account for the emission patterns that play an essential role in the selection of the observed radio and gamma-ray pulsars. We discuss recent phenomenologically derived geometric models of the radio emission and luminosity and a gamma-ray emission geometry and luminosity derived theoretically from acceleration-cascade processes in the polar cap model. We present some preliminary results exploring how the emission geometry influences the correlation between the radio and gamma-ray pulse profiles. We also show how the assumed beam geometries affect the population statistics of radio-loud and radio-quiet, gamma-ray pulsars as predicted to be observed by EGRET and GLAST. This work was supported in part by the NASA under the grant NRA-00-01-ATP-080, NSF under the grant SAA 9876670, NSF-REU, and the Research Corporation.

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