A 3D Current Loop Model of Magnetic Clouds

Details A 3D Current Loop Model of Magnetic Clouds A 3D Current Loop Model of Magnetic Clouds

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...180.0508c&link_type=abstract

American Astronomical Society, 180th AAS Meeting, #05.08; Bulletin of the American Astronomical Society, Vol. 24, p.734

Astronomy and Astrophysics

Astronomy

Scientific paper

A magnetohydrodynamic (MHD) model is developed to study magnetic clouds (Burlaga et al. 1981). In this model, magnetic clouds observed near 1 AU are treated as a consequence of eruptive solar current loops. It is shown that current loops intially in MHD equilibrium can be triggered to rise rapidly, propelling material of up to 10(16) g at up to ~ 1000 km s(-1) and dissipating ~ 10(32) erg of magnetic energy in tens of minutes. The initial rise profile is consistent with observed height-time profiles of erupting filaments (Kahler et al. 1988). Two triggering mechanisms for eruption are suggested: (1)subphotospheric energy storage and trigger and (2) in situ (coronal) energy storage and trigger. In the former, eruption occurs as a result of changes in the subphotospheric magnetic topology and subsequent relaxation to a new equilibrium. In the latter, the current loop can evolve to exceed a local maximum in the magnetic potential associated with the ambient magnetic fields. The former scenario leads to more energetic and longer-lasting eruption than the latter. Burlaga, L. F., Sittler, E., Mariani, F., and Schwenn, R. 1981, J. Geophys. Res., 86, 6673. Kahler, S. W., Moore, R. L., Kane, S. R., and Zirin, H. 1988, Ap. J., 328, 824.

Affiliated with

Also associated with

No associations

Rating

A 3D Current Loop Model of Magnetic Clouds 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 A 3D Current Loop Model of Magnetic Clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A 3D Current Loop Model of Magnetic Clouds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1512197