3D Global MHD Simulations of Flux-Rope-Driven CMEs

Details 3D Global MHD Simulations of Flux-Rope-Driven CMEs 3D Global MHD Simulations of Flux-Rope-Driven CMEs

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsh12b0759g&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SH12B-0759

Physics

7513 Coronal Mass Ejections

Scientific paper

We present a three-dimensional (3D) numerical ideal magnetohydrodynamics (MHD) model describing the time-dependent expulsion of a CME form the solar corona. We begin by developing a 3D MHD model of a steady-state helmet streamer enveloped by a solar wind. We then drive the helmet streamer to erupt in a CME by introduction of a twisted magnetic flux rope that is anchored at both ends in the photosphere and embedded in the helmet streamer. We follow the evolution of the CME from the low corona as it makes its way through heliosphere. We explore the dynamics of the expanding flux rope as it interacts with the rotating, bi-modal solar wind to determine significant MHD effects such as shock formation. Finally we present synthetic white-light coronagraphs images of the model CME to determine the degree to which they match observations of CME structure.

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