Evolution of magnetic flux ropes associated with flux transfer events and interplanetary magnetic clouds

Details Evolution of magnetic flux ropes associated with flux transfer events and interplanetary magnetic clouds Evolution of magnetic flux ropes associated with flux transfer events and interplanetary magnetic clouds

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.1619w&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Feb. 1, 1991, p. 1619-1632. Research supported by NASA.

Physics

1

Flux Transfer Events, Interplanetary Magnetic Fields, Magnetic Clouds, Magnetic Flux, Magnetopause, Computerized Simulation, Magnetohydrodynamic Waves, Magnetosonic Resonance, Satellite Observation, Two Dimensional Models

Scientific paper

Spacecraft observations suggest that flux transfer events and interplanetary magnetic clouds may be associated with magnetic flux ropes which are magnetic flux tubes containing helical magnetic field lines. In the magnetic flux ropes, the azimuthal magnetic field is superposed on the axial field. The time evolution of a localized magnetic flux rope is studied. A two-dimensional compressible MHD simulation code with a cylindrical symmetry is developed to study the wave modes associated with the evolution of flux ropes. It is found that in the initial phase both the fast magnetosonic wave and the Alfven wave are developed in the flux rope. After this initial phase, the Alfven wave becomes the dominant wave mode for the evolution of the magnetic flux rope and the radial expansion velocity of the flux rope is found to be negligible. Numerical results further show that even for a large initial azimuthal component of the magnetic field, the propagation velocity along the axial direction of the flux rope remains the Alfven velocity. It is also found that the localized magnetic flux rope tends to evolve into two separate magnetic ropes propagating in opposite directions. The simulation results are used to study the evolution of magnetic flux ropes associated with flux transfer events observed at the earth's dayside magnetopause and magnetic clouds in the interplanetary space.

Affiliated with

Also associated with

No associations

Rating

Evolution of magnetic flux ropes associated with flux transfer events and interplanetary 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 Evolution of magnetic flux ropes associated with flux transfer events and interplanetary magnetic clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of magnetic flux ropes associated with flux transfer events and interplanetary magnetic clouds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1317630