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Polarimetric Properties of the Crab Pulsar between 1.4 and 8.4 GHz

D. A. Moffett·T. H. Hankins
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Abstract

New polarimetric observations of the Crab pulsar at frequencies between 1.4 and 8.4 GHz are presented. Additional pulse components discovered in earlier observations (Moffett & Hankins 1996, astro-ph/9604163) are found to have high levels of linear polarization, even at 8.4 GHz. No abrupt sweeps in position angle are found within pulse components; however, the position angle and rotational phase of the interpulse do change dramatically between 1.4 and 4.9 GHz. The multi-frequency profile morphology and polarization properties indicate a non-standard origin of the emission. Several emission geometries are discussed, but the one favored locates sites of emission both near the pulsar surface and in the outer magnetosphere.

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D. A. Moffett, T. H. Hankins. 1999-04-30. Polarimetric Properties of the Crab Pulsar between 1.4 and 8.4 GHz. https://doi.org/10.1086/307654

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