Astronomy and Astrophysics – Astronomy
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spd....31.0262w&link_type=abstract
American Astronomical Society, SPD Meeting #31, #02.62; Bulletin of the American Astronomical Society, Vol. 32, p.822
Astronomy and Astrophysics
Astronomy
Scientific paper
The high spatial resolution (0.5 arcsec) and broad temperature response (104-10^7 K) of the Transition Region and Coronal Explorer (TRACE) make it a unique instrument for observing solar flares. Here we present analysis of several large two-ribbon flares observed with both TRACE and Yohkoh. The high spatial resolution TRACE observations show that solar flare plasma is generally not confined to a single loop or even a few isolated loops, but a multitude of fine coronal structures. These observations also suggest that the high temperature flare plasma generally appears diffuse while the cooler (<2 MK) post-flare plasma is loop-like. We conjecture that the diffuse appearance of the high temperature flare emission seen with TRACE is due to a combination of the emission measure structure of these flares and the instrumental temperature response and does not reflect fundamental differences in plasma morphology at the different temperatures.
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