Measuring the Physical Properties of the Solar Corona: Results from SUMER/SOHO and TRACE |
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Authors: | Warren HP |
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Institution: | (1) Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 58;(2) Cambridge, MA , 02138, U.S.A |
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Abstract: | Using SUMER observations taken above the limb of a quiet region we derive electron temperatures, emission measures, and absolute
elemental abundances. This analysis, which uses recently published ionization balance calculations and the latest solar photospheric
abundances, indicates that the low-FIP elements are enriched by a factor of 2.3±0.7 in the corona, which is smaller than some
previous measurements. TRACE observations of this region yield systematically lower temperatures and emission measures. |
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