2015-08-31T20:21:07.000Z http://sot.lmsal.com Ted Tarbell LMSAL http://lmsal.com 3251 Hanover Rd, O/ADBS, B/252, Palo Alto, CA, 94304 +1-650-424-2400 tarbell@lmsal.com Hinode SOT Arikawa Lee Derosa (RCO) 244 244 null HOP244 AR AR 12403 Active Region 1 900 -291 0 0 2015-08-31T12:04:00.000Z 2015-08-31T17:41:35.000Z 900 -291 Solar flare observations Flaring AR, Na Full FOV, Ca 30s, NaV/I 30s, 2x2+2x2 Supra-arcade plasma that appears above a flare arcade after an eruption has been clearly observed in the soft X-rays using Yohkoh SXT and Hinode XRT, and in the EUV using the TRACE 195 A channel and the AIA 131 A channel (e.g. Savage and McKenzie 2011; Reeves and Golub, 2011, Warren et al., 2011). In one fortuitous case, emission from the Fe XXI line at 1354 A was detected in a post eruption plasma sheet using SUMER (Innes, 2003a,b). This supra-arcade plasma has been found to exhibit dynamic and turbulent motions (McKenzie 2013). These motions can provide insights into the reconnection process and also possible heating mechanisms of the supra-arcade plasma. The hot lines in EIS and the Fe XXI line in IRIS can provide crucial velocity information perpendicular to the plane of the sky for this plasma (see Doschek, McKenzie, and Warren, ApJ, submitted). High cadence XRT images along with AIA images from SDO will be useful for determining the motions in the plane of the sky and providing temperature information.