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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, creat/da en: 2010 | |||
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Este documento está disponible también en : http://www.aanda.org/index.php?option=article&access=doi&doi=10.1051/0004-6361/200913584 |
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| 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. | |||
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