Multifrequency radio observations of the solar corona during cycle minimum
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Rigaud, D.
Lantos, P.
Alissandrakis, C. E.
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peer reviewed
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Advances in Space Research
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Observations obtained at meter and decimeter wavelengths during a period of very low solar activity (from May to July 1986) are studied to analyse the relationship between the corona and the underlying levels. The location of radio sources observed on the disk is compared with active regions and with Hα filaments. The radio emission is found to trace on the disk the large scale structure of the corona as observed with K-coronameter: the so-called coronal sheet (belt of equatorial streamers) is observed and individual streamers could be located, for the first time, on the disk.
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http://www.sciencedirect.com/science/article/pii/027311779190092X
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Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών