A DYNAMICAL MODEL OF MAGNETIC CLOUDS

Authors
Citation
T. Yeh, A DYNAMICAL MODEL OF MAGNETIC CLOUDS, The Astrophysical journal, 438(2), 1995, pp. 975-984
Citations number
21
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
0004637X
Volume
438
Issue
2
Year of publication
1995
Part
1
Pages
975 - 984
Database
ISI
SICI code
0004-637X(1995)438:2<975:ADMOMC>2.0.ZU;2-9
Abstract
Magnetic clouds observed in interplanetary space are probably the inte rplanetary manifestations of coronal mass ejections. A looplike magnet ic cloud is modeled as a gigantic flux rope that moves through the mag netized medium of the solar wind. The dynamics of a model cylindrical magnetic cloud is used to elucidate the motion of magnetic clouds and their expansion in interplanetary space. Previous models of magnetic c louds with the assumption of either force-free magnetic field or magne tohydrostatic equilibrium preclude the consideration of motion. The dy namical model, based on flux rope dynamics, allows the inclusion of fo rces that drive the motion of the magnetic clouds relative to the sola r wind.