Fine thermal structure of a coronal active region |
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| Authors: | Reale Fabio Parenti Susanna Reeves Kathy K Weber Mark Bobra Monica G Barbera Marco Kano Ryouhei Narukage Noriyuki Shimojo Masumi Sakao Taro Peres Giovanni Golub Leon |
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| Institution: | Dipartimento di Scienze Fisiche ed Astronomiche, Sezione di Astronomia, Università di Palermo, Piazza del Parlamento 1, 90134 Palermo, Italy. reale@astropa.unipa.it |
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| 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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