Dissipative Relaxed State for Plasma with External Drive: Application to Solar Coronal Magnetic Field

Details Dissipative Relaxed State for Plasma with External Drive: Application to Solar Coronal Magnetic Field Dissipative Relaxed State for Plasma with External Drive: Application to Solar Coronal Magnetic Field

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmng31b1195d&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #NG31B-1195

Astronomy and Astrophysics

Astrophysics

4430 Complex Systems, 4460 Pattern Formation, 4485 Self-Organization, 4490 Turbulence (3379, 4568, 7863)

Scientific paper

In astrophysical context, systems occurring in nature such as solar corona are open and externally driven . Here we investigate the relaxed states of plasma with an external drive, based on the principle of minimum dissipation. The principle minimum dissipation rate (MDR) is closely related to a well-known theorem of irreversible thermodynamics, viz. the principle of minimum entropy production rate. Such relaxed states with magnetic fields are coupled with flows are non-force free and can support finite pressure gradient. . A full 3- D numerical simulation principle of minimum dissipation rate under the constraint of (approximate) conservation of global helicity is a viable approach for plasma relaxation for a closed system. In a recent simulation by Dastgeer et al. (unpublished) we have shown that for a plasma with external drive a perpendicular component of current develops, which shows that a plasma can relax to a non-force free state. We demonstrate that Solar arcade structures can be modeled as a minimum dissipative relaxed state, and different types of arcade structures can be generated.Further, we demonstrate briefly a newly developed approach to solar coronal magnetic field extrapolation from vector magnetograms, based on MDR.

Affiliated with

Also associated with

No associations

Rating

Dissipative Relaxed State for Plasma with External Drive: Application to Solar Coronal Magnetic Field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dissipative Relaxed State for Plasma with External Drive: Application to Solar Coronal Magnetic Field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dissipative Relaxed State for Plasma with External Drive: Application to Solar Coronal Magnetic Field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1242976