Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...472..372c&link_type=abstract
Astrophysical Journal v.472, p.372
Astronomy and Astrophysics
Astronomy
33
Magnetohydrodynamics: Mhd, Sun: Corona, Sun: Flares, Sun: Magnetic Fields
Scientific paper
The resistive evolution of presheared magnetic arcades in a two-dimensional Cartesian geometry is investigated. We find that there is a critical value of shear over which magnetic reconnection can take place in a magnetic arcade to create a magnetic island. The diffusion of the toroidal field eventually leads to thinning of the current layer for any amount of shear, whereas the diffusion of the poloidal field brings about current layer thinning only for shears above the critical value. The reconnection profiles are found to depend on spatial resistivity patterns. A fast reconnection with small shock angles can be achieved only when the resistivity is confined to a small volume. In this case, high-speed reconnection outflows can tear the magnetic island into a pair. The fast moving island system creates a fast shock or a steepened fast-mode structure, which resembles an observed coronal mass ejection (CME) frontal loop.
Choe Gwang-Son
Lee Clarence L.
No associations
LandOfFree
Evolution of Solar Magnetic Arcades. II. Effect of Resistivity and Solar Eruptive Processes 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 Evolution of Solar Magnetic Arcades. II. Effect of Resistivity and Solar Eruptive Processes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of Solar Magnetic Arcades. II. Effect of Resistivity and Solar Eruptive Processes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1146548