Toroidal Magnetic Field Generation in the Magnetosphere of Crab Pulsar

Author: Nanobashvili, Irakli

Source: Astrophysics and Space Science, Volume 294, Numbers 3-4, December 2004 , pp. 125-134(10)

Publisher: Springer

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Abstract:

Plasma mechanism for the generation of toroidal magnetic field in the magnetosphere of Crab pulsar is presented. The mechanism is based on the development of parametric type instability in the relativistic electron-positron plasma of the pulsar magnetosphere. As a result of plasma corotation with pulsar and its magnetic field, the effect of plasma radial braking takes place and the time dependence of plasma particle radial velocity is harmonic. This triggers the development of parametric type instability in the relativistic plasma of the pulsar magnetosphere. The energy for this process is drawn from the slowing down of pulsar rotation.

Keywords: instabilities; magnetic field; magnetosphere; pulsars; relativistic plasma

Document Type: Research Article

DOI: http://dx.doi.org/10.1007/s10509-004-2512-1

Affiliations: Center for Plasma Astrophysics of Abastumani Astrophysical Observatory, Georgian Academy of Sciences, Al. Kazbegi Ave. 2a, 0160, Tbilisi, Georgia, Email: inanob@yahoo.com

Publication date: December 1, 2004

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