Physics – Plasma Physics
Scientific paper
Sep 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1236v&link_type=abstract
Journal of Geophysical Research (Space Physics), Volume 107, Issue A9, pp. SSH 2-1, CiteID 1236, DOI 10.1029/2001JA005068
Physics
Plasma Physics
28
Interplanetary Physics: Ejecta, Driver Gases, And Magnetic Clouds, Space Plasma Physics: Numerical Simulation Studies, Interplanetary Physics: Interplanetary Magnetic Fields, Solar Physics, Astrophysics, And Astronomy: Coronal Mass Ejections
Scientific paper
A magnetic cloud ejected from the Sun is simulated as a part of a toroid. Its evolution and propagation through interplanetary space are studied using three-dimensional magnetohydrodynamic self-consistent numerical simulations. The flux rope deforms as it moves from the Sun, and this deformation causes a hypothetical spacecraft to observe the flux rope two times at some locations; that is, it could be crossed at its apex and a flank. Simulated observations at the apex give all three signatures of a magnetic cloud following from its definition. The apex is rather flat and can be approximated by a prolate (in latitude) cylinder. At the flanks of the flux rope the temperature drop is not pronounced, but the magnetic field increase has a double-peak profile.
Odstrcil Dusan
Vandas Marek
Watari Shinichi
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