Abstract
We present the time‐dependent propagation of a Sun‐Earth connection event that occurred on 4 November 1997 using a three‐dimensional (3‐D) numerical magnetohydrodynamics (MHD) simulation. A global steady state solar wind for this event is obtained by a 3‐D SIP‐CESE MHD model with Parker's 1‐D solar wind solution and measured photospheric magnetic fields as the initial values. Then, superposed on the quiet background solar wind, a spherical plasmoid is used to mimic the 4 November 1997 coronal mass ejection (CME) event. The CME is assumed to arise from the evolution of a spheromak magnetic structure with high‐speed, high‐pressure, and high‐plasma‐density plasmoid near the Sun. Moreover, the axis of the initial simulated CME is put at S14W34 to conform to the observed location of this flare/CME event. The result has provided us with a relatively satisfactory comparison with the Wind spacecraft observations, such as southward interplanetary magnetic field and large‐scale smooth rotation of the magnetic field associated with the CME.
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