Solar magnetic flux-tubes and coronal loops

Details Solar magnetic flux-tubes and coronal loops Solar magnetic flux-tubes and coronal loops

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990esasp.311....1f&link_type=abstract

In its Plasma Astrophysics p 1-6 (SEE N91-15046 06-90)

Physics

Plasma Physics

Extreme Ultraviolet Radiation, Magnetic Flux, Solar Corona, Solar Flares, Solar Magnetic Field, Chromosphere, Photosphere, Plasma Physics, Soho Mission, Solar Atmosphere

Scientific paper

High resolution observations show that the solar magnetic field is structured in flux-tubes 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 alpha or in different continua. Constraints on flux-tube models are presented. Observations of loops in the corona show the confining role of the magnetic field, but also the coexistence of plasmas at different temperatures. Relevant diagnosis 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 flux-tubes and coronal loops, the expected contribution of the SOHO observatory and of the SIMURIS interferometric project under study for ultrahigh resolution, is stressed.

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