Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-09-17
Astrophys.J. 590 (2003) 411-423
Astronomy and Astrophysics
Astrophysics
Submitted to Astrophysical Journal
Scientific paper
10.1086/374884
The average polarization properties of conal single and double profiles directly reflect the polarization-modal structure of the emission beams which produce them. These average properties require that the circulating subbeam systems which produce conal beams entail paired PPM and SPM emission elements which are offset from each other in both magnetic azimuth and magnetic colatitude. A clear delineation of the modal polarization topology of the conal beam promises to address fundamental questions about the nature and origin of this modal emission--and the modal parity at the outer beam edges is a fact of considerable significance. The different angular dependences of the modal ``beamlets'' suggests that the polarization modes are generated via propagation effects. This argument may prove much stronger if the modal emission is fundamentally only partially polarized. Several theories now promise quantitative comparison with the observations.
Ramachandran Radhika
Rankin Joanna M.
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