Change search
ReferencesLink to record
Permanent link

Direct link
Rapid Temporal Variability of Faculae: High-Resolution Observations and Modeling
Show others and affiliations
2006 (English)In: The Astrophysical Journal, ISSN 0004-637X, Vol. 646, no 2, 1405-1420 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2006. Vol. 646, no 2, 1405-1420 p.
Keyword [en]
Sun: Chromosphere, Sun: Magnetic Fields, Sun: Photosphere
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-20172DOI: doi:10.1086/505074OAI: diva2:186697
Available from: 2007-03-01 Created: 2007-03-01 Last updated: 2011-01-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Löfdahl, MatsScharmer, Göran
By organisation
Department of Astronomy
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 17 hits
ReferencesLink to record
Permanent link

Direct link