Observation on Current Helicity and Proxies of Subsurface Kinetic Helicity in Solar Active Regions
Affiliation
National Astronomical Observatories, Chinese Academy of Sciences
Main category
Natural Sciences (Physics)
Abstract
By using the photospheric vector magnetogram and subsurface vector velocity field, we studied the
systematic behavior of current helicity and relevant quantities of subsurface flow. Mainly it contains
three aspects:
1) The spatial distribution and temporal evolution of current helicity.
2) The connection between the current helicity and subsurface kinetic helicity.
3) The spatial distribution ant temporal evolution of subsurface vorticity and divergence.
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