TEMPERATURE AND DENSITY STRUCTURE OF THE 1991 NOVEMBER 2 FLARE OBSERVED BY THE YOHKOH SOFT-X-RAY TELESCOPE AND HARD X-RAY TELESCOPE

We measure temperature and density structure for a soft X-ray solar fl are observed by the Soft X-Ray Telescope (SXT) on board the Yohkoh sat ellite. For a flare observed by the SXT on 1991 November 2, we have ca lculated temperature and emission measure as functions of space and ti me. The plasma density is calculated from the emission measure using s imple geometrical assumptions (for example, cylindrical or spherical s ymmetry). The energy in the soft X-ray plasma also is calculated. Init ial results from this analysis show the following: (1) The flare plasm as range in temperature from several million K up to 25 million K; (2) the flare has impulsive soft X-ray emission from a loop footpoint, wh ich is also the location of the impulsive hard X-ray burst observed by the Yohkoh HXT; and (3) the plasma density, pressure, and energy all increase during the flare.