Fast magnetosonic wave excitation by an array of wires with time-modulated currents

Sánchez Arriaga, Gonzalo and Sanmartín Losada, Juan Ramón (2010). Fast magnetosonic wave excitation by an array of wires with time-modulated currents. "Annales Geophysicae", v. 28 ; pp. 577-586. ISSN 0992-7689.

Description

Title: Fast magnetosonic wave excitation by an array of wires with time-modulated currents
Author/s:
  • Sánchez Arriaga, Gonzalo
  • Sanmartín Losada, Juan Ramón
Item Type: Article
Título de Revista/Publicación: Annales Geophysicae
Date: 2010
Volume: 28
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The excitation of Fast Magnetosonic (FMS)waves by a cylindrical array of parallel tethers carrying timemodulated current is discussed. The tethers would fly vertical in the equatorial plane, which is perpendicular to the geomagnetic field when its tilt is ignored, and would be stabilized by the gravity gradient. The tether array would radiate a single FMS wave. In the time-dependent background made of geomagnetic field plus radiated wave, plasma FMS perturbations are excited in the array vicinity through a parametric instability. The growth rate is estimated by truncating the evolution equation for FMS perturbations to the two azimuthal modes of lowest order. Design parameters such as tether length and number, required power and mass are discussed for Low Earth Orbit conditions. The array-attached wave structure would have the radiated wave controlled by the intensity and modulation frequency of the currents, making an active experiment on non-linear low frequency waves possible in real space plasma conditions.

More information

Item ID: 22482
DC Identifier: http://oa.upm.es/22482/
OAI Identifier: oai:oa.upm.es:22482
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 20 Feb 2014 14:23
Last Modified: 01 Dec 2016 08:53
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