Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...308..219s&link_type=abstract
Astronomy and Astrophysics, v.308, p.219-227
Astronomy and Astrophysics
Astrophysics
2
Sun: Corona, Sun: Magnetic Field, Sun: Prominences
Scientific paper
Recent observations have shown that, rather than being uniform blocks or clouds of cool material, solar prominences contain a great amount of fine structure in three dimensions. This model builds on a previous model allowing variations in the two horizontal directions but now introduces variation in the vertical direction. The resulting prominence, therefore, consists of a number of cool threads occupying dips in the magnetic field. However, these cool fibrils are of differing vertical extents i.e. some survive across a region of transition where the prominence geometry changes with height, while others exist only above or below such a region. At the upper or lower edge of a fibril, the vertical extent of the dip is negatively correlated with the temperature i.e. as the dip evens out, the temperature returns to coronal values. Neither the thermal nor the magnetic structure in the corona around the prominence is influenced by the fibril structure within the prominence.
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