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http://hdl.handle.net/2248/4297
Title: | Statistical mechanics of velocity and magnetic fields in solar active regions |
Authors: | Krishan, V |
Keywords: | Turbulence Coronal Loops Magnetohydrodynamic Solar Activity Solar Magnetic Field Solar Velocity Statistical Mechanics Distribution Functions Incompressible Fluids |
Issue Date: | Feb-1985 |
Publisher: | Springer |
Citation: | Solar Physics, Vol. 95, No. 2, pp. 269 - 280 |
Abstract: | A statistical mechanics of the velocity and magnetic fields is formulated for an active region plasma. The plasma subjected to the conservation laws emerges in a most probable state which is described by an equilibrium distribution function containing a lagrange multiplier for every invariant of the system. The lagrange multipliers are determined by demanding that the measured expectation values of the invariants be reproduced. For a numerical exercise, we have assumed some probable values for these invariants. The total energy of a coronal loop is estimated from energy balance considerations. Doppler widths of the UV and EUV lines excited in the coronal loop plasma give a measure of the root-mean-square velocities. Measurements of magnetic helicity are not available for the solar corona. |
URI: | http://hdl.handle.net/2248/4297 |
ISSN: | 0038-0938 |
Appears in Collections: | IIAP Publications |
Files in This Item:
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Statistical mechanics of velocity | 776.05 kB | Adobe PDF | ![]() View/Open |
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