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

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

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Balmaceda, Laura Antonia; Vargas Domínguez, Santiago; Palacios Hernández, Judit; Cabello García, Iballa Beatriz; Domingo Codoñer, Vicente
Aquest document és un/a article publicat, creat/da en: 2010
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.

    BALMACEDA, Laura Antonia; VARGAS DOMÍNGUEZ, Santiago; PALACIOS HERNÁNDEZ, Judit; CABELLO GARCÍA, Iballa Beatriz; DOMINGO CODOÑER, Vicente (2010): Evidence of small-scale magnetic concentrations dragged by vortex motion of solar photospheric plasma, Astronomy & Astrophysics, vol. 513, núm. 5
http://www.aanda.org/index.php?option=article&access=doi&doi=10.1051/0004-6361/200913584
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