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Fractal dissipation of small-scale magnetic fluctuations in solar wind turbulence as seen by CLUSTER

  • K. Kiyani
  • , S. Chapman
  • , Y. Khotyaintsev
  • , M. Dunlop
  • , F. Sahraoui

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A robust multiscale analysis of high-frequency magnetic field measurements from the Cluster spacecraft is presented using complimentary measurements from the magnetometer and search-coil instruments; in a stationary interval of fast ambient solar wind. We show a surprising and novel result: that for time-scales smaller than the ion-gyro period the magnetic field fluctuations exhibit non-Gaussian monoscaling i.e. are globally scale invariant and can be characterized by a single scaling exponent and thus a single universal scaling function for the probability density. This presents new questions, as well as theoretical constraints, for determining how magnetic turbulent energy is dissipated in collisionless plasmas.

Original languageEnglish
Title of host publicationTwelfth International Solar Wind Conference
Pages136-139
Number of pages4
DOIs
Publication statusPublished - 14 May 2010
Event12th International Solar Wind Conference - Saint-Malo, France
Duration: 21 Jun 200926 Jun 2009

Publication series

NameAIP Conference Proceedings
Volume1216
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference12th International Solar Wind Conference
Country/TerritoryFrance
CitySaint-Malo
Period21/06/0926/06/09

Keywords

  • Collisionless plasma
  • Solar wind
  • Space physics
  • Turbulence

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