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Solar Magnetic Field Reversals and the Role of Dynamo Families
M. L. DeRosa, A. S. Brun, J. T. Hoeksema
The variable magnetic field of the solar photosphere exhibits periodic reversals as a result of dynamo activity occurring within the solar interior. We decompose the surface field…
How to optimize nonlinear force-free coronal magnetic field extrapolations from SDO/HMI vector magnetograms?
T. Wiegelmann, J. K. Thalmann, B. Inhester +3
The SDO/HMI instruments provide photospheric vector magnetograms with a high spatial and temporal resolution. Our intention is to model the coronal magnetic field above active regi…
Evolution of Magnetic Field and Energy in A Major Eruptive Active Region Based on SDO/HMI Observation
Xudong Sun, J. Todd Hoeksema, Yang Liu +4
We report the evolution of magnetic field and its energy in NOAA active region 11158 over 5 days based on a vector magnetogram series from the Helioseismic and Magnetic Imager (HMI…