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Astron. Astrophys. 317, L21-L22 (1997)


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Letter to the Editor

A new whistler-mode and its role in strongly magnetized electron-positron plasmas with charged dust grains

P. K. Shukla 1, S. Jammalamadaka 2 and L. Stenflo 3

1 Institut für Theoretische Physik IV Ruhr Universität Bochum D-44780 Bochum Germany
2 Max-Planck Institut für Aeronomie, D-37191 Katlenburg-Lindau, Germany
3 Department of Plasma Physics Umeå University S-90187 Umea, Sweden

Received 7 May 1996 / Accepted 30 May 1996

Abstract

It is shown that the presence of charged dust grains and/or high-Z heavy ions in strongly magnetized electron-positron plasmas can give rise to a novel whistler-like mode. The ponderomotive force of the latter can create large scale density perturbations and cause differential acceleration of dust grains/heavy ions having a variable charge to mass ratio distribution.

Key words: hydromagnetics — plasmas — whistlers

Send offprint requests to: P. K. Shukla


© European Southern Observatory (ESO) 1997

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