Rapid Temporal Variability of Faculae: High-Resolution Observations and Modeling

Details Rapid Temporal Variability of Faculae: High-Resolution Observations and Modeling Rapid Temporal Variability of Faculae: High-Resolution Observations and Modeling

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apj...646.1405d&link_type=abstract

The Astrophysical Journal, Volume 646, Issue 2, pp. 1405-1420.

Astronomy and Astrophysics

Astronomy

24

Sun: Chromosphere, Sun: Magnetic Fields, Sun: Photosphere

Scientific paper

We present high-resolution G-band observations (obtained with the Swedish 1 m Solar Telescope) of the rapid temporal variability of faculae, which occurs on granular timescales. By combining these observations with magnetoconvection simulations of a plage region, we show that much of this variability is not intrinsic to the magnetic field concentrations that are associated with faculae, but rather a phenomenon associated with the normal evolution and splitting of granules. We also show examples of facular variability caused by changes in the magnetic field, with movies of dynamic behavior of the striations that dominate much of the facular appearance at 0.1" resolution. Examples of these dynamics include merging, splitting, rapid motion, apparent fluting, and possibly swaying.

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