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Alfven waves in space plasmas

Uberoi, C (1995) Alfven waves in space plasmas. In: International conference on plasma physics ICPP 1994, 31 October- 4 November 1994, Foz Do Iguacu, Brazil, Vol.345, 383-390.

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Official URL: http://proceedings.aip.org/resource/2/apcpcs/345/1...


A brief review of time-dependent theories of resonant mode coupling of Alfven waves in space plasmas is presented. A well behaved solution of the hydromagnetic wave equation for a general class of initial conditions is then discussed to understand the ringing, phase-mixing and variable eigenperiods of the field line oscillations in the magnetosphere. This solution is further exploited to discuss the initial transient amplification of Alfven waves in sheared magnetospheric plasma. The features of free oscillations of field lines studied are shown to compare well with previous numerical studies and observations made for particular types of impulse excitations of the magnetosphere.

Item Type: Conference Paper
Publisher: American Institute of Physics
Additional Information: Copyright of this article belongs to American Institute of Physics.
Department/Centre: Division of Physical & Mathematical Sciences > Mathematics
Date Deposited: 18 Sep 2007
Last Modified: 11 Jan 2012 07:25
URI: http://eprints.iisc.ac.in/id/eprint/10951

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