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Pulsar Emission Beams and Profiles in an Inverse-Compton Scattering Model

Published online by Cambridge University Press:  27 September 2017

G. J. Qiao
G. J. Qiao*
Affiliation:
Center of Astronomy and Astrophysics, CCTS (World Laboratory) and Department of Geophysics, Peking University

Abstract

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The vast majority of pulsar profiles at meter wavelengths are dominated by core components (Rankin 1983, 1990; Lyne and Manchester 1988), but in the usual polar cap models of pulsar emission, it is difficult to get central beam or “core” radiation. In this paper, we present a calculation for both the “core” and hollow “cone” emission beams, as well as model pulse profiles in an inverse-Compton scattering (ICS) model. Both “core” and hollow “cone” emission beams axe obtained naturally in the calculations. Examples of pulse profiles of pulsars at different radio frequencies are presented.

The theoretical shapes of the pulse profiles agree very satisfactorily with actual observations, which means that the mechanism suggested here may be the actual one.

Type
Part VI Polar cap theories
Information
International Astronomical Union Colloquium , Volume 128: Magnetospheric structure and emission mechanisms of radio pulsars , 1992 , pp. 238 - 241
Copyright
Copyright © United States Naval Observatory 1992