Simulation of Magnetic Reconnection with Heat Conduction
Open Access
- 1 March 1999
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 513 (1), 516-523
- https://doi.org/10.1086/306823
Abstract
Magnetohydrodynamic (MHD) equations are numerically solved to study 2.5-dimensional magnetic reconnection with field-aligned heat conduction, which is also compared with the adiabatic case. The dynamical evolution starts after anomalous resistivity is introduced into a hydrostatic solar atmosphere with a force-free current sheet, which might be similar to the configuration before some solar flares. The results show that two jets (i.e., the outflows of the reconnection region) appear. The downward jet collides with the closed line-tied field lines, and a bright loop is formed with a termination shock at the loop top. As the reconnection goes on, the loop rises almost uniformly with a speed of tens of km s−1, and the two footpoints of the loop separate with a speed comparable to the loop rise speed. Besides the apparent loop motion, the magnetic loops below the loop top shrink weakly. Such a picture is consistent with that given by observations of two-ribbon solar flares. Moreover, the results indicate that the slow MHD shock contributes to the bright loop heating. Some detailed structures of the reconnection process are also discussed.This publication has 23 references indexed in Scilit:
- Reconnection and Field Line Shrinkage in Solar FlaresThe Astrophysical Journal, 1996
- A multistep implicit scheme for time-dependent 2-dimensional magnetohydrodynamic flowsJournal of Computational Physics, 1989
- The formation of flare loops by magnetic reconnection and chromospheric ablationSolar Physics, 1989
- A numerical experiment relevant to line-tied reconnection in two-ribbon flaresSolar Physics, 1983
- Numerical study of line-tied magnetic reconnectionSolar Physics, 1982
- Slow-shock heating and the Kopp-Pneuman model for ?post?-flare loopsSolar Physics, 1982
- Kinematics of a loop prominenceSolar Physics, 1979
- An emerging flux model for the solar flare phenomenonThe Astrophysical Journal, 1977
- Theoretical model of flares and prominencesSolar Physics, 1974
- On the Association Between Loop Prominences and Flares.The Astrophysical Journal, 1964