86 citations · 549 across the 22 of their papers we have counts for
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astro-ph.SR2012★ 18 cited
Analysis on Correlations between Subsurface Kinetic Helicity and Photospheric Current Helicity in Active Regions
Yu Gao, Junwei Zhao, Hongqi Zhang
An investigation on correlations between photospheric current helicity and subsur- face kinetic helicity is carried out by analyzing vector magnetograms and subsurface velocities f…
astro-ph.SR2012★ 20 cited
A Statistical Study on Force-Freeness of Solar Magnetic Fields in the Photosphere
S. Liu, J. T. Su, H. Q. Zhang +4
It is an indisputable fact that solar magnetic fields are force-free in the corona, where force free fields means that current and magnetic fields are parallel and there is no Lore…
astro-ph.SR2012★ 25 cited
A Statistical Study on Photospheric Magnetic Nonpotentiality of Active Regions and Its Relationship with Flares during Solar Cycles 22-23
Xiao Yang, HongQi Zhang, Yu Gao +2
A statistical study is carried out on the photospheric magnetic nonpotentiality in solar active regions and its relationship with associated flares. We select 2173 photospheric vec…