Physics
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph...96...93b&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 96, March 1985, p. 93-111.
Physics
27
Coronal Loops, Extreme Ultraviolet Radiation, Solar Limb, Solar Magnetic Field, Solar Rotation, Stereoscopy, Data Processing, Data Reduction, Least Squares Method, Photometry, Photosphere, Potential Fields, Solar Activity, Solar Atmosphere
Scientific paper
The three-dimensional shape of coronal magnetic loops is restored from extreme ultraviolet (XUV) images of the sun (Skylab Mission 3, 1973) by using the perspective effect due to the solar rotation. An original method is developed which only depends on the assumption that the magnetic structures under consideration are (at least geometrically) stable within the time interval used for restoration. Large scale loops interconnecting different active regions are studied by applying this method. They are found to lie approximately in planes inclined from the local vertical. Generally these loops are asymmetric, i.e., their apices are shifted toward one of the footpoints. This tendency is also confirmed by the computation of coronal magnetic fields based on the photospheric magnetic data.
Berton R.
Sakurai Takashi
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