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Pulsar Polarimetry – New Aspects at High Radio Frequencies

Published online by Cambridge University Press:  12 April 2016

Alexis von Hoensbroech
Alexis von Hoensbroech*
Affiliation:
Max-Planck- Institut für Radioestronomie, Auf dem Hügel 69, D-53121 Bonn, Germany

Abstract

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Pulsar polarimetry is an important tool for the investigation of the physical processes and the environment in the magnetosphere. However, the great variety of observed polarization states and the few obvious systematics hamper a straightforward interpretation. In this paper it is shown that the polarimetric features of pulsars are much more systematic at high radio frequencies. An analysis of 116 profiles at 4.85 GHz reveals a clear correlation between the degree of polarization and Ė. Also evidence is shown for pulsars with a heavily increasing degree of circular polarization. Further, a basic concept of a simple magnetospheric propagation scenario is presented, which can account for a variety of polarimetric properties of pulsars.

Type
Part 3. Studies of Radio Emission
Information
International Astronomical Union Colloquium , Volume 177: Pulsar Astronomy - 2000 and Beyond , 2000 , pp. 267 - 268
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

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