Tag Archives: magnetic field
126. Solar Oblateness and Its Variations in Phase with the 22-yr Magnetic Cycle
125. Solar Farside Magnetograms from Deep Learning Analysis of STEREO/EUVI Data
124. On Solar surface Electric field Estimation with 3 Poisson solvers (SEE3Po) for driving time-dependent MHD simulations of solar active regions
123. Very Fast Helicity Injection Leading to Critically Stable State and Large Eruptive Activity of AR 12673
120. Magnetic Fields and the Supply of Low-Frequency Acoustic Waves to the Solar Chromosphere
Through analyzing simultaneous HMI’s visible-light observations and AIA’s ultraviolet observations, the authors show that a significant amount of acoustic waves with frequencies lower than the theoretical cutoff frequency can channel up along less inclined magnetic field from the photosphere to the chromosphere.
115. Investigation of White-light Emission in Circular-ribbon Flares
A total of 90 circular-ribbon flares are identified in 8 years of SDO observations, and 33 of them are found associated with white-light enhancements, a rate higher than non-circular-ribbon flares. It is thus suggested that the fan-spine magnetic field topology and the total amount of energy release plays roles in causing white-light flares.