Spatial Correlation of Solar-Wind Turbulence from Two-Point Measurements

W. H. Matthaeus, S. Dasso, J. M. Weygand, L. J. Milano, C. W. Smith, and M. G. Kivelson
Phys. Rev. Lett. 95, 231101 – Published 2 December 2005

Abstract

Interplanetary turbulence, the best studied case of low frequency plasma turbulence, is the only directly quantified instance of astrophysical turbulence. Here, magnetic field correlation analysis, using for the first time only proper two-point, single time measurements, provides a key step in unraveling the space-time structure of interplanetary turbulence. Simultaneous magnetic field data from the Wind, ACE, and Cluster spacecraft are analyzed to determine the correlation (outer) scale, and the Taylor microscale near Earth’s orbit.

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  • Received 8 September 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.231101

©2005 American Physical Society

Authors & Affiliations

W. H. Matthaeus1, S. Dasso2, J. M. Weygand3, L. J. Milano1, C. W. Smith4, and M. G. Kivelson3

  • 1Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
  • 2Instituto de Astronomía y Física del Espacio (IAFE) and Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
  • 3IGPP, UCLA, Los Angeles, California 90095, USA
  • 4Institute for Earth, Oceans and Space, University of New Hampshire, Durham, New Hampshire 03824, USA

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Vol. 95, Iss. 23 — 2 December 2005

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