Magnetohydrodynamic Numerical Simulations of Coronal Mass Ejections and Associated Giant Arcades

Details Magnetohydrodynamic Numerical Simulations of Coronal Mass Ejections and Associated Giant Arcades Magnetohydrodynamic Numerical Simulations of Coronal Mass Ejections and Associated Giant Arcades

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....6.3379s&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

Scientific paper

By extending the Chen-Shibata [1] model of coronal mass ejections (CMEs), we develop physical model of CMEs and associated giant arcades just below CMEs in two and half dimension, incorporating heat conduction. On the basis of the simulation results, the theoretical soft X-ray images are calculated and compared with observations of CMEs and giant arcades with Yohkoh/SXT (soft X-ray telescope). Detailed comparison between simulated X-ray images and observations revealed that (1) the Y-shaped ejection features, often seen at the bottom of some CMEs, might corresp ond to slow and fast mode MHD shocks associated with reconnection [3], (2) the dimming, often observed both sides of arcades, can be produced at least partly by reconnection inflow, (3) the back bone like bright soft X-ray features seen at the top of some arcades might corresp ond to fast mode MHD shocks just below reconnection jet.

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