Hostname: page-component-7c8c6479df-995ml Total loading time: 0 Render date: 2024-03-28T18:19:57.158Z Has data issue: false hasContentIssue false

Magnetic coupling of photosphere and corona: MHD simulation for multi-wavelength observations

Published online by Cambridge University Press:  14 March 2005

Jörg Büchner
Affiliation:
Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany email: buechner@linmpi.mpg.de
B. Nikutowski
Affiliation:
Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany email: buechner@linmpi.mpg.de
A. Otto
Affiliation:
University of Fairbanks, Alaska, Fairbanks, AK, USA
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Magnetic coupling relates the energy sources below the photosphere to the structure and dynamics of the chromosphere and corona of the Sun. Multi-wavelength investigations of the solar activity provides the information needed to understand the acting physical mechanisms. Descriptions of magnetic coupling often start with force-free mathematical extrapolations of the photospheric magnetic field. Observations have revealed, however, perpendicular electric current sheets, reconnection and other locally non-force-free structures in chromosphere and corona. Obviously, the solar magnetic coupling includes dynamic forcing due to photospheric plasma motion. We developed a model which though it starts with force-free extrapolated observed photospheric magnetic field additionally takes into account the energy input due to the chromospheric neutral gas and plasma motion. We demonstrate the abilities of our model by applying it to SoHO multi-wavelength observations of an EUV bright point (BP).To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Copyright
© 2004 International Astronomical Union