In this paper we aim to measure the temperature along a specific coronal loop feature which is located in an active region on the western solar limb. The data is taken from Joint Observing Programme 146 and consists of high cadence TRACE triple filter images coinciding with sparse raster CDS spectroscopic data. The double filter ratio temperature analysis technique is applied to two sets of TRACE images having a 20 minute time gap resulting in temperatures between 1.0-1.3 MK. The CDS sparse raster line intensities are used to create emission measure (EM) loci plots determining temperature values over an overlapping 40 minute observing period. These plots appear to be consistent with a line of sight isothermal structure which increases in temperature from sim1.20 MK to sim1.75 MK over the observing period; in contrast, EM loci plots for nearby background pixels depict multi-thermal emission. Possible reasons for the difference between the TRACE and CDS results and the implications of this analysis upon future observations is discussed.
Authors: J. B. Noglik, R. W. Walsh & J. Cirtain
Publication Status: ApJ resubmitted
Last Modified: 2007-10-15 10:07