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Chromosphere to 1 AU Simulation of the 2011 March 7th Event: A Comprehensive Study of Coronal Mass Ejection Propagation View all abstracts by submitter

Meng Jin   Submitted: 2017-01-12 15:16

We perform and analyze the results of a global magnetohydrodynamic simulation of the fast coronal mass ejection (CME) that occurred on 2011 March 7. The simulation is made using the newly developed Alfvén Wave Solar Model (AWSoM), which describes the background solar wind starting from the upper chromosphere and extends to 24 R ⊙. Coupling AWSoM to an inner heliosphere model with the Space Weather Modeling Framework extends the total domain beyond the orbit of Earth. Physical processes included in the model are multi-species thermodynamics, electron heat conduction (both collisional and collisionless formulations), optically thin radiative cooling, and Alfvén-wave turbulence that accelerates and heats the solar wind. The Alfvén-wave description is physically self-consistent, including non-Wentzel-Kramers-Brillouin reflection and physics-based apportioning of turbulent dissipative heating to both electrons and protons. Within this model, we initiate the CME by using the Gibson-Low analytical flux rope model and follow its evolution for days, in which time it propagates beyond STEREO A. A detailed comparison study is performed using remote as well as in situ observations. Although the flux rope structure is not compared directly due to lack of relevant ejecta observation at 1 au in this event, our results show that the new model can reproduce many of the observed features near the Sun (e.g., CME-driven extreme ultraviolet [EUV] waves, deflection of the flux rope from the coronal hole, "double-front" in the white light images) and in the heliosphere (e.g., shock propagation direction, shock properties at STEREO A).

Authors: M. Jin, W. B. Manchester, B. van der Holst, I. Sokolov, G. Toth, A. Vourlidas, C. A. de Koning, and T. I. Gombosi
Projects: None

Publication Status: Published by ApJ
Last Modified: 2017-01-13 06:08
Go to main E-Print page  Data Constrained Coronal Mass Ejections in A Global Magnetohydrodynamics Model  An exploration of heating mechanisms in a supra-arcade plasma sheet formed after a coronal mass ejection  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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