Direct evidence for chromospheric evaporation in a well-observed compact flare |
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| Authors: | RC Canfield TA Gunkler HS Hudson LW Acton JW Leibacher AL Kiplinger |
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| Institution: | Center for Astrophysics and Space Sciences, University of California, San Diego, La Jolla, California 92093, USA;Lockheed Palo Alto Research Laboratory, Lockheed Missiles and Space Co., Inc., Palo Alto, California 94304, USA;Applied Research Corporation, Landover, Maryland, and Goddard Space Flight Center, NASA, Greenbelt, Maryland 20771, USA |
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| Abstract: | We have observed the flare of 1980 May 7 1456 UT with several Solar Maximum Mission instruments, in coordination with the Sacramento Peak Observatory Vacuum Tower Telescope. From the X-ray data we determine the total amount of plasma at T > 2 × 106 K, commonly attributed to chromospheric evaporation. From Hα we have determined the amount of plasma that has been evaporated from the chromosphere. We find that enough material has been evaporated from the chromosphere to account for the X-ray plasma. Taken together, the Hα, soft and hard X-ray images suggest that chromospheric evaporation is driven both by flare accelerated electrons, during the impulsive phase, and conduction, during the thermal phase. |
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