Articles | Volume 37, issue 4
Ann. Geophys., 37, 603–612, 2019
https://doi.org/10.5194/angeo-37-603-2019

Special issue: 7th Brazilian meeting on space geophysics and aeronomy

Ann. Geophys., 37, 603–612, 2019
https://doi.org/10.5194/angeo-37-603-2019

Regular paper 22 Jul 2019

Regular paper | 22 Jul 2019

Converging photospheric vortex flows close to the polarity inversion line of a fully emerged active region

Jean C. Santos and Cristiano M. Wrasse

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to technical corrections (17 Jun 2019) by Marcos D. Silveira
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Short summary
We describe a technique used to locate and classify critical points in 2-D flow fields at the solar photosphere obtained from the evolution of the line-of-sight magnetic field in a region close to the magnetic polarity inversion line of a fully emerged active region. We apply this technique to locate a particular kind of critical point associated to vortex flows, which are considered important, since they can twist and interweave the foot points of flux tubes and generate magnetic reconnection.