Other
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..983..139r&link_type=abstract
40 YEARS OF PULSARS: Millisecond Pulsars, Magnetars and More. AIP Conference Proceedings, Volume 983, pp. 139-141 (2008).
Other
Pulsars, Neutron Stars, Radiation Mechanisms, Polarization, Magnetohydrodynamics And Plasmas, Supernovae
Scientific paper
The Johnston et al. (2006) demonstration that natal supernovae ``kinks'' tend to orient a pulsar's rotation axis Ω with its proper-motion direction Aν potentially provides the important possibility of determining how pulsar radiation is polarized with respect to the projected magnetic field direction. Although orthogonal polarization mode (OPM) emission has been detected in most pulsars, heretofore no means has been available to fix its absolute direction. Were we thus able to distinguish the OPM orientation, one or the other could be associated with the O or X propagation mode and the implications explored physically. Then, if the O-mode displacements are in the expected direction, magnetospheric refraction provides a very plausible mechanism. Concretely, the outer edges of conal profiles are almost always highly depolarized through the incoherent mixing of roughly equal OPM levels-requiring them to be offset in both magnetic colatitude and longitude. We inquire whether these differential OPM offsets result from magnetospheric refraction. We expand on these various circumstances below, and show how they can be applied in practice.
Mitra Dipanjan
Rankin Joanna M.
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