Magnetic pumping of whistler waves by tether current modulation

Sánchez Arriaga, Gonzalo and Sanmartín Losada, Juan Ramón (2010). Magnetic pumping of whistler waves by tether current modulation. "Journal of geophysical research", v. 115 ; p. 2311. ISSN 0148-0227. https://doi.org/10.1029/2009JA014478.

Description

Title: Magnetic pumping of whistler waves by tether current modulation
Author/s:
  • Sánchez Arriaga, Gonzalo
  • Sanmartín Losada, Juan Ramón
Item Type: Article
Título de Revista/Publicación: Journal of geophysical research
Date: 2010
ISSN: 0148-0227
Volume: 115
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

Magnetic excitation of whistlers by a square array of electrodynamic tethers is discussed. The array is made of perpendicular rows of tethers that carry equal, uniform, and time-modulated currents at equal frequency with a 90° phase shift. The array would fly vertical in the orbital equatorial plane, which is perpendicular to the geomagnetic field B0 when its tilt is ignored. The array radiates a whistler wave along B0. A parametric instability due to pumping by the background magnetic field through the radiated wave gives rise to two unstable coupled whistler perturbations. The growth rate is maximum for perturbations with wave vector at angles 38.36° and 75.93° from B0. For an experiment involving a wavefront that moves with the orbiting array, which might serve to study nonlinear wave interactions and turbulence in space plasmas, characteristic values of growth rate and parameters, such as the number of tethers and their dimensions and distances in the array, are discussed for low Earth orbit ambient conditions.

More information

Item ID: 23230
DC Identifier: http://oa.upm.es/23230/
OAI Identifier: oai:oa.upm.es:23230
DOI: 10.1029/2009JA014478
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 25 Mar 2014 12:47
Last Modified: 01 Dec 2016 12:53
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