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Title: INTERMITTENCY OF SOLAR WIND DENSITY FLUCTUATIONS FROM ION TO ELECTRON SCALES

The intermittency of density fluctuations in the solar wind at kinetic scales has been examined using high time resolution Faraday cup measurements from the Spektr-R spacecraft. It was found that the probability density functions (PDFs) of the fluctuations are highly non-Gaussian over this range, but do not show large changes in shape with scale. These properties are statistically similar to those of the magnetic fluctuations and are important to understanding the dynamics of small scale turbulence in the solar wind. Possible explanations for the behavior of the density and magnetic fluctuations are discussed.
Authors:
 [1] ;  [2] ; ;  [3]
  1. Department of Physics, Imperial College London, London SW7 2AZ (United Kingdom)
  2. Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States)
  3. Faculty of Mathematics and Physics, Charles University, Prague 18000 (Czech Republic)
Publication Date:
OSTI Identifier:
22365755
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 789; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; DENSITY; FARADAY CUPS; FLUCTUATIONS; IONS; MAGNETIC FIELDS; PLASMA; PROBABILITY DENSITY FUNCTIONS; SOLAR ELECTRONS; SOLAR WIND; TIME RESOLUTION; TURBULENCE