[Previous] | [Session 17] | [Next]
J.T. Scott, J.W. Cirtain, P.C.H. Martens (Montana State University)
Joint Observing Program 146 was designed to collect data on coronal loops using the Coronal Diagnostic Spectrometer on SoHO and the Transition Region and Coronal Explorer. These two instruments collectively provide high spatial, temporal and temperature resolution. Calibration of the 171Å filter on TRACE to spectral line intensities collected by CDS combines these qualities to produce the most detailed data currently available for the solar corona. We have determined an absolute value for the wavelengths of ions in data collected on September 18, 2001. This wavelength was then used to determine the Doppler shifts for many points along a coronal loop. The resulting values for velocity and intensity of Mg IX were then compared to the flux measured by the TRACE 171Å filter. We find a appreciable correlation between the 171Å filter and Mg IX. We use this determination to develop method of Differential Emission Measure analysis that provides a DEM for any pixel along a loop at nearly the same instant in time. This is uncharacteristic of DEM curves typically created from CDS data, as these curves are highly time dependant.
[Previous] | [Session 17] | [Next]
Bulletin of the American Astronomical Society, 35 #3
© 2003. The American Astronomical Soceity.