Fine thermal structure of a coronal active region.
Reale, Fabio ; Parenti, Susanna ; Reeves, Kathy K ; et al. ; - ASI Sponsor
Dec - 2007
ISSN : 1095-9203 ;
journal : Science (New York, N.Y.)
Issue : 5856
type: Article Journal
Abstract
The determination of the fine thermal structure of the solar corona is fundamental to constraining the coronal heating mechanisms. The Hinode X-ray Telescope collected images of the solar corona in different passbands, thus providing temperature diagnostics through energy ratios. By combining different filters to optimize the signal-to-noise ratio, we observed a coronal active region in five filters, revealing a highly thermally structured corona: very fine structures in the core of the region and on a larger scale further away. We observed continuous thermal distribution along the coronal loops, as well as entangled structures, and variations of thermal structuring along the line of sight.
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