Hostname: page-component-77c89778f8-cnmwb Total loading time: 0 Render date: 2024-07-18T20:27:57.865Z Has data issue: false hasContentIssue false
  • English
  • Français

Dynamical Magnetic Energy Release of Current Loops in the Corona: Effects of Toroidal Forces

Published online by Cambridge University Press:  27 September 2017

James Chen
James Chen*
Affiliation:
U. S. Naval Research Laboratory, Washington, DC 20375, U.S.A.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We discuss a mechanism whereby a current loop embedded in plasmas such as the solar and stellar coronae can dissipate magnetic energy without resistive effects or reconnection. This mechanism arises from the motion of magnetic/current structures driven by “toroidal forces”. Using a simple model loop, we show that it can exhibit a wide range of motion with correspondingly wide range of magnetic energy dissipation rates. For example, a loop with ~20G can attain expansion velocities of ~1200km s–1 under solar coronal conditions, dissipating ~1032erg in a few tens of minutes.

Type
Session III: Theory
Information
International Astronomical Union Colloquium , Volume 104 , Issue 2: Solar and Stellar Flares , 1989 , pp. 293 - 296
Copyright
Copyright © Kluwer 1989

References

Chen, J. 1987, NRL Memo Report 6086, to appear in Ap. J. (1989).Google Scholar
Kahler, S. W., Moore, R. L., Kane, S. R. and Zirin, H. 1988, Ap. J., 328, 824.Google Scholar
Xue, M. L. and Chen, J. 1983, Solar Phys., 84, 119.Google Scholar