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| Paper: |
Detection of Vortex Tubes in Solar Granulation from Observations SUNRISE |
| Volume: |
455, 4th Hinode Science Meeting: Unsolved Problems and Recent Insights |
| Page: |
35 |
| Authors: |
Steiner, O.; Franz, M.; González, N. B.; Nutto, C.; Rezaei, R.; Pillet, V. M.; Bonet, J. A.; Iniesta, J. C. d. T.; Domingo, V.; Solanki, S. K.; Knölker, M.; Schmidt, W.; Barthol, P.; Gandorfer, A. |
| Abstract: |
We investigated a time series of continuum intensity maps and Dopplergrams
of granulation in a very quiet solar region at the disk center, recorded with
the Imaging Magnetograph eXperiment (IMaX) on board the balloon-borne solar
observatory SUNRISE. We find that granules frequently show substructure
in the form of lanes composed of a leading bright rim and a trailing dark edge,
which move together from the boundary of a granule into the granule itself. We find
strikingly similar events in synthesized intensity maps from an ab initio numerical
simulation of solar surface convection. We conclude that these granular lanes
are the visible signature of (horizontally oriented) vortex tubes. The characteristic
optical appearance of vortex tubes at the solar surface is explained.
This paper is a summary and update of the results previously presented in Steiner et al. (2010). |
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