A data-driven MHD model of the global solar corona within Multi-Scale Fluid-Kinetic Simulation Suite (MS-FLUKSS)

11th International Conference on Numerical Modeling of Space Plasma Flows

Yalim, Mehmet Sarp^2 ; Pogorelov, Nikolai^1,2 ; Liu, Yang^3

Department of Space Science, University of Alabama in Huntsville, 320 Sparkman Drive, Huntsville

AL

35805, United States^1

Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville, 320 Sparkman Drive, Huntsville

AL

35805, United States^2

W. W. Hansen Experimental Physics Laboratory, Stanford University, 452 Lomita Mall, Stanford

CA

94305, United States^3

关键词: Adaptive mesh refinement codes;    Horizontal velocity;    Kinetic simulation;    Lawrence Berkeley National Laboratory;    Solar and heliospheric observatories;    Solar dynamics observatories;    Time-distance helioseismology;    Vector magnetograms;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/837/1/012015/pdf
DOI  :  10.1088/1742-6596/837/1/012015

来源: IOP

【 摘 要 】

We have developed a data-driven magnetohydrodynamic (MHD) model of the global solar corona which uses characteristically-consistent boundary conditions (BCs) at the inner boundary. Our global solar corona model can be driven by different observational data including Solar Dynamics Observatory/Helioseismic and Magnetic Imager (SDO/HMI) synoptic vector magnetograms together with the horizontal velocity data in the photosphere obtained by the time-distance helioseismology method, and the line-of-sight (LOS) magnetogram data obtained by HMI, Solar and Heliospheric Observatory/Michelson Doppler Imager (SOHO/MDI), National Solar Observatory/Global Oscillation Network Group (NSO/GONG) and Wilcox Solar Observatory (WSO). We implemented our model in the Multi-Scale Fluid-Kinetic Simulation Suite (MS-FLUKSS) - a suite of adaptive mesh refinement (AMR) codes built upon the Chombo AMR framework developed at the Lawrence Berkeley National Laboratory. We present an overview of our model, characteristic BCs, and two results we obtained using our model: A benchmark test of relaxation of a dipole field using characteristic BCs, and relaxation of an initial PFSS field driven by HMI LOS magnetogram data, and horizontal velocity data obtained by the time-distance helioseismology method using a set of non-characteristic BCs.