Other
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.9431s&link_type=abstract
American Astronomical Society Meeting 210, #94.31; Bulletin of the American Astronomical Society, Vol. 39, p.222
Other
Scientific paper
Analysis of loops observed with the Coronal Diagnostics Spectrometer (CDS) and the Transition Region and Coronal Explorer (TRACE) reveal examples of both isothermal and multithermal plasma. These data were taken on 2003 January 17, and since the loops are on the disk, a lot of work was done on the details of background subtraction. The background-subtracted CDS intensities were analyzed using three methods: (1) Emission Measure Loci, (2) Forward-Folding DEM, and (3) Automatic-Inversion DEM. The first loop appears to be isothermal, with Log T = 5.8 MK. The forward-folding DEM shows a spike at this temperature and the EM Loci curves all intersect at this point. The automatic-inversion DEM results are broadened, however, as a result of the smoothing required for this method. This loop has a uniform temperature along the segment visible in the CDS field of view, and this result is confirmed using the TRACE data. The pixels along the second loop do not appear to be isothermal. The EM Loci curves do not intersect at a single point and both DEM methods show a broad curve. Other loops in this data set as well as loop evolution will be investigated if time permits. Solar physics research at the University of Memphis is supported by NSF ATM-0402729 and NASA NNG05GE68G.
Cirtain Jonathan
Del Zanna Giulio
DeLuca Edward E.
Garst J.
Kimble Jason
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