Nanoflares and MHD Turbulence in Coronal Loops: A Hybrid Shell Model

Details Nanoflares and MHD Turbulence in Coronal Loops: A Hybrid Shell Model Nanoflares and MHD Turbulence in Coronal Loops: A Hybrid Shell Model

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrvl..92s4501n&link_type=abstract

Physical Review Letters, vol. 92, Issue 19, id. 194501

Statistics

29

Nonlinear Dynamics And Chaos

Scientific paper

A model to describe injection, due to footpoint motions, storage, and dissipation of MHD turbulence in coronal loops, is presented. The model is based on the use of the shell technique in the wave vector space applied to the set of reduced MHD equations. Numerical simulation showed that the energy injected is efficiently stored in the loop where a significant level of magnetic and velocity fluctuations is obtained. Nonlinear interactions among these fluctuations give rise to an energy cascade towards smaller scales where energy is dissipated in an intermittent fashion. The statistical analysis performed on the intermittent dissipative events compares well with all observed properties of nanoflare emission statistics.

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