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

Abstract

We perform and analyze results of a global magnetohydrodyanmic (MHD) 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${}_{\odot }$. Coupling AWSoM to an inner heliosphere (IH) model with the Space Weather Modeling Framework (SWMF) 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 (WKB) 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 (GL) 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 \textit{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).

55 pages, 17 figures, 1 table, accepted by ApJ

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• Tuning the Exo-Space Weather Radio for Stellar Coronal Mass Ejections
• Non-equilibrium Flux Rope Formation by Confined Flares Preceding a Solar Coronal Mass Ejection
• Modelling a multi-spacecraft coronal mass ejection encounter with EUHFORIA
• Coronal Mass Ejections and Dimmings: A Comparative Study using MHD Simulations and SDO Observations
• Eruptive Event Generator Based on the Gibson-Low Magnetic Configuration
• Using the Coronal Evolution to Successfully Forward Model CMEs' In Situ Magnetic Profiles
• Assessing the Influence of Input Magnetic Maps on Global Modeling of the Solar Wind and CME-driven Shock in the 2013 April 11 Event
• Influence of coronal holes on CME deflections: numerical study
• The Space Environment and Atmospheric Joule Heating of the Habitable Zone Exoplanet TOI700-d
• Simulating Solar Coronal Mass Ejections constrained by Observations of their Speed and Poloidal flux
• Understanding the Origins of Problem Geomagnetic Storms Associated With "Stealth" Coronal Mass Ejections