Coronal heating, nanoflares, and MHD turbulence

1996 ◽  
Author(s):  
M. Velli
Keyword(s):  
Coronal Heating ◽  
Mhd Turbulence

scholarly journals Coronal Heating, Weak MHD Turbulence, and Scaling Laws

2007 ◽  
Vol 657 (1) ◽  
pp. L47-L51 ◽  
Author(s):  
A. F. Rappazzo ◽  
M. Velli ◽  
G. Einaudi ◽  
R. B. Dahlburg
Keyword(s):  
Scaling Laws ◽  
Coronal Heating ◽  
Mhd Turbulence

Coronal heating by selective decay of MHD turbulence

Solar Physics ◽  
1988 ◽  
Vol 116 (1) ◽  
Author(s):  
D. G�mez ◽  
C.Ferro Font�n
Keyword(s):  
Coronal Heating ◽  
Mhd Turbulence ◽  
Selective Decay

scholarly journals MAGNETOHYDRODYNAMIC WAVES AND CORONAL HEATING: UNIFYING EMPIRICAL AND MHD TURBULENCE MODELS

2013 ◽  
Vol 764 (1) ◽  
pp. 23 ◽  
Author(s):  
Igor V. Sokolov ◽  
Bart van der Holst ◽  
Rona Oran ◽  
Cooper Downs ◽  
Ilia I. Roussev ◽  
...  
Keyword(s):  
Turbulence Models ◽  
Coronal Heating ◽  
Mhd Turbulence ◽  
Magnetohydrodynamic Waves

scholarly journals Observations and Models of Coronal Heating

2001 ◽  
Vol 203 ◽  
pp. 456-466
Author(s):  
F. Malara ◽  
M. Velli
Keyword(s):  
Energy Release ◽  
Power Law ◽  
Magnetic Energy ◽  
Detection Threshold ◽  
Solar Radius ◽  
Coronal Heating ◽  
Fast Wave ◽  
Mhd Turbulence ◽  
Small Energy ◽  
Power Law Distributions

Energy release in the solar Corona is characterized by a sequence of space and time localized events, whose intensity follows power-law distributions. In quiet Sun regions, small energy events, possibly under the detection threshold, dominate, thus supporting the “nanoflare” scenario of coronal heating. Two complementar models of heating are discussed, in connection with the above observational features. The first model is based on Alfvénic wavepackets dissipation in 3D force-free magnetic fields; the presence of regions of chaoticity of magnetic lines allows for a fast wave dissipation, within a fraction of a solar radius. The second model describes a MHD turbulence in low-β plasma, in which magnetic energy is continuously furnished by slow photospheric motions. Energy release events corresponds dissipation of current sheets, often associated with magnetic reconnection. The resulting distribution of dissipated power follows a power law, similar to observations.

Coronal heating by quasi-2D MHD turbulence driven by non-WKB wave reflection

1999 ◽  
Author(s):  
William H. Matthaeus ◽  
Gary P. Zank ◽  
Sean Oughton
Keyword(s):  
Wave Reflection ◽  
Coronal Heating ◽  
Mhd Turbulence

scholarly journals Coronal Heating by D.C. Currents

1990 ◽  
Vol 142 ◽  
pp. 207-214
Author(s):  
J. Heyvaerts
Keyword(s):  
Coronal Heating ◽  
Mhd Turbulence ◽  
Dc Current

Present views on DC current coronal heating are presented. The relation to AC mechanisms, the importance of MHD turbulence in both processes, and the convergence of presently proposed ideas is outlined.

Inverse cascade in simulated MHD turbulence driven by small scale source of magnetic helicity

2016 ◽  
Vol 52 (1) ◽  
pp. 261-268
Author(s):  
R. Stepanov ◽  
◽  
V. Titov ◽  
◽  
Keyword(s):  
Magnetic Helicity ◽  
Small Scale ◽  
Mhd Turbulence ◽  
Inverse Cascade
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