Curvature Radiation in Pulsar Magnetospheric Plasma
Janusz GilInstitute of Astronomy, University of Zielona Góra, Lubuska 2, 65-265, Zielona Góra, PolandYuri LyubarskyBen-Gurion University, Beer-Sheva, 84105, IsraelGeorge I. MelikidzeAbastumani Astrophysical Observatory, Al. Kazbegi Avenue 2a, Tbilisi 380060, Georgia
2004en
ABI
Abstract
We consider the curvature radiation of the point-like charge moving relativistically along curved magnetic field lines through a pulsar magnetospheric electron-positron plasma. We demonstrate that the radiation power is largely suppressed as compared with the vacuum case, but still at a considerable level, high enough to explain the observed pulsar luminosities. The emitted radiation is polarized perpendicularly to the plane of the curved magnetic filed lines coincides with $ which can freely escape from the magnetospheric plasma. Our results strongly support the coherent curvature radiation by the spark-associated solitons as a plausible mechanism of pulsar radio emission.
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