Evidence of small-scale magnetic concentrations dragged by vortex motion of solar photospheric plasma

Abstract

Vortex-type motions have been measured by tracking bright points in high-resolution observations of the solar photosphere. These small-scale motions are thought to be determinant in the evolution of magnetic footpoints and their interaction with plasma and therefore likely to play a role in heating the upper solar atmosphere by twisting magnetic flux tubes. We report the observation of magnetic concentrations being dragged towards the center of a convective vortex motion in the solar photosphere from high-resolution ground-based and space-borne data. We describe this event by analyzing a series of images at different solar atmospheric layers. By computing horizontal proper motions, we detect a vortex whose center appears to be the draining point for the magnetic concentrations detected in magnetograms and well-correlated with the locations of bright points seen in G-band and CN images.

5 pages, 4 figures, Accepted for publication in Astronomy and Astrophysics.

References in corpus (3)

• The Solar Optical Telescope for the Hinode Mission: An Overview
• Convectively driven vortex flows in the Sun
• Evidence of photospheric vortex flows at supergranular junctions observed by FG/SOT (Hinode)

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