Parametric study of loop-like magnetic cloud propagation

Details Parametric study of loop-like magnetic cloud propagation Parametric study of loop-like magnetic cloud propagation

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jgr...10115645v&link_type=abstract

Journal of Geophysical Research, Volume 101, Issue A7, p. 15645-15652

Physics

Plasma Physics

16

Solar Physics, Astrophysics, And Astronomy: Coronal Mass Ejections, Interplanetary Physics: Interplanetary Magnetic Fields, Interplanetary Physics: Solar Wind Plasma, Space Plasma Physics: Numerical Simulation Studies

Scientific paper

Propagation and evolution of loop-like magnetic clouds in the ambient solar wind flow are studied self-consistently using ideal MHD equations in the 21/2-dimensional approximation. Magnetic clouds, as ideal force-free objects (cylinders lying in the ecliptic plane), are ejected near the Sun and followed beyond the Earth's orbit. We investigate the influence of various initial parameters, like the injection velocity or different steady states of the solar wind, on their propagation and evolution. Simulation results are compared with an analytical theory of magnetic cloud evolution (expansion) published by Osherovich et al. [1993a, b] good agreement is found, although no need to use a polytropic index less than 1 (as in the analytical approach) is required.

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