Flux concentrations in turbulent convection

Petri J. Käpylä, Axel Brandenburg, Nathan Kleeorin, Maarit J. Mantere, Igor Rogachevskii

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

Abstract

We present preliminary results from high resolution magneto-convection simulations where we find the formation of flux concentrations from an initially uniform magnetic field. The structures appear in roughly ten convective turnover times and live close to a turbulent diffusion time. The time scales are compatible with the negative effective magnetic pressure instability (NEMPI), although structure formation is not restricted to regions where the effective magnetic pressure is negative.

Original languageEnglish
Title of host publicationSolar and Astrophysical Dynamos and Magnetic Activity
EditorsAlexander G. Kosovichev, Elisabete de Gouveia Dal Pino, Yihua Yan
Pages283-288
Number of pages6
EditionS294
DOIs
StatePublished - 1 Aug 2012

Publication series

NameProceedings of the International Astronomical Union
NumberS294
Volume8
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

Keywords

  • MHD
  • Sun: magnetic fields
  • turbulence

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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