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Alfvén resonance absorption in electron-positron plasmas

Published online by Cambridge University Press:  08 June 2011

N. F. Cramer
N. F. Cramer*
Affiliation:
School of Physics, The University of Sydney, NSW 2006, Australia email: [email protected]
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Abstract

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Waves propagating obliquely in a magnetized cold pair plasma experience an approximate resonance in the wavevector component perpendicular to the magnetic field, which is the analogue of the Alfvén resonance in normal electron-ion plasmas. Wave absorption at the resonance can take place via mode conversion to the analogue of the short wavelength inertial Alfvén wave. The Alfvén resonance could play a role in wave propagation in the pulsar magnetosphere leading to pulsar radio emission. Ducting of waves in strong plasma gradients may occur in the pulsar magnetosphere, which leads to the consideration of Alfvén surface waves, whose energy is concentrated in the region of strong gradients.

Keywords

plasmaswavespulsars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S274: Advances in Plasma Astrophysics , September 2010 , pp. 224 - 227
Copyright
Copyright © International Astronomical Union 2011

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