Dynamical evolution of twisted magnetic flux tubes. I - Equilibrium and linear stability

Details Dynamical evolution of twisted magnetic flux tubes. I - Equilibrium and linear stability Dynamical evolution of twisted magnetic flux tubes. I - Equilibrium and linear stability

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...361..690m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 361, Oct. 1, 1990, p. 690-700. Research supported by NASA.

Astronomy and Astrophysics

Astrophysics

87

Coronal Loops, Magnetohydrodynamic Stability, Solar Corona, Current Density, Magnetic Flux, Photosphere

Scientific paper

The three-dimensional dynamical evolution of twisted magnetic flux tubes is studied using a time-dependent magnetohydrodynamic (MHD) model. The flux tubes are intended to model solar coronal loops, and include the stabilizing effect of photospheric line tying. The model permits the complete evolution of flux tubes to be followed self-consistently, including the formation, equilibrium, linear instability, and nonlinear behavior. Starting from an initial uniform background magnetic field, a twisted flux tube is created by the application of slow, localized photospheric vortex flows. The flux tube evolves quasi-statically through sequences of equilibria with increasing twist, until it becomes linearly unstable to an ideal MHD kink mode. In this paper, the equilibrium properties and the linear stability behavior are discussed. The application of the method to the uniform-twist, Gold-Hoyle field confirms the previous stability threshold for kink instability and provides estimates of the resulting growth rate.

Affiliated with

Also associated with

No associations

Rating

Dynamical evolution of twisted magnetic flux tubes. I - Equilibrium and linear stability 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 Dynamical evolution of twisted magnetic flux tubes. I - Equilibrium and linear stability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical evolution of twisted magnetic flux tubes. I - Equilibrium and linear stability will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1302120