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

Sánchez Arriaga, Gonzalo y 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.

Descripción

Título: Fast magnetosonic wave excitation by an array of wires with time-modulated currents
Autor/es:
  • Sánchez Arriaga, Gonzalo
  • Sanmartín Losada, Juan Ramón
Tipo de Documento: Artículo
Título de Revista/Publicación: Annales Geophysicae
Fecha: 2010
Volumen: 28
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 22482
Identificador DC: http://oa.upm.es/22482/
Identificador OAI: oai:oa.upm.es:22482
Depositado por: Biblioteca ETSI Aeronauticos
Depositado el: 20 Feb 2014 14:23
Ultima Modificación: 01 Dic 2016 08:53
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