AAS Meeting #194 - Chicago, Illinois, May/June 1999
Session 79. The Sun Close Up: Results from the TRACE Mission
Solar, Oral, Wednesday, June 2, 1999, 2:00-3:30pm, Continental Ballroom C

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[79.03] On the Nature of the "Moss" Observed by TRACE

P.C.H. Martens, C.C. Kankelborg (MSU)

Moss is the name given to low lying (~2 Mm), hot (~1 MK) plasma that has recently been observed by the Transition Region and Coronal Explorer (TRACE). The moss occurs over some but not all magnetic plage. We investigate two hypotheses regarding the nature of the moss: (1) emission from small, million degree loops; (2) emission from the legs of 2-5 million degree loops. An analytical loop model is used to demonstrate that only the second hypothesis is consistent with the observations. It is shown that the observed brightness of the moss should scale as the third power of the loop maximum temperature.

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