Solar magnetic flux-tubes and coronal loops.
Abstract
High resolution observations show that the solar magnetic field is structured in fluxtubes from the photosphere to the corona. These tubes can be diagnosed with EUV images such as those obtained with the Transition region Camera rocket experiment in Ly α or in different continua. Constraints on flux tube models are presented. Observations of loops in the corrona show the confining role of the magnetic field, but also the coexistence of plasmas at different temperatures. Relevant diagnostics and models of coronal loops are discussed. The study of these magnetic structures on the sun, considered as a plasma laboratory, is of interest for stellar magnetic fields and coronae and in other astrophysical contexts. For discriminating between different processes at work in fluxtubes and coronal loops, the author stresses the expected contribution of the SOHO observatory and of the SIMURIS interferometric project under study for ultra-high resolution.
- Publication:
-
ESA Special Publication
- Pub Date:
- August 1990
- Bibcode:
- 1990ESASP.311....1F
- Keywords:
-
- Solar Magnetic Fields: Magnetic Flux Tubes;
- Solar Magnetic Fields: Models;
- Solar Coronal Loops: Magnetic Flux Tubes;
- Solar Coronal Loops: Models;
- Extreme Ultraviolet Radiation;
- Magnetic Flux;
- Solar Corona;
- Solar Flares;
- Solar Magnetic Field;
- Chromosphere;
- Photosphere;
- Plasma Physics;
- Soho Mission;
- Solar Atmosphere;
- Solar Physics