86 citations · 549 across the 22 of their papers we have counts for
3 papers · 1 filter
Magnetic helicity and energy spectra of a solar active region
Hongqi Zhang, Axel Brandenburg, D. D. Sokoloff
We compute for the first time magnetic helicity and energy spectra of the solar active region NOAA 11158 during 11-15 February 2011 at 20^o southern heliographic latitude using obs…
Magnetic Nonpotentiality in Photospheric Active Regions as a Predictor of Solar Flares
Xiao Yang, GangHua Lin, HongQi Zhang +1
Based on several magnetic nonpotentiality parameters obtained from the vector photospheric active region magnetograms obtained with the Solar Magnetic Field Telescope at the Huairo…
Method of Relative Magnetic Helicity Computation II: Boundary Conditions for the Vector Potentials
Shangbin Yang, Jörg Büchner, Jean Carlo Santos +1
We have proposed a method to calculate the relative magnetic helicity in a finite volume as given the magnetic field in the former paper (Yang et al. {\it Solar Physics}, {\bf 283}…