PIMMS Version s2.1a Release Note
This version contains these new features and updates:
The new XTE PCA effective area curve brings count rate estimates using PIMMS and the 256 channel and 6 channel PCA matrices (used in XSPEC) into agreement. Earlier versions of PIMMS used a slightly larger, but not unreasonable, PCA effective area and used a response matrix having an energy scale and offset different from the 6 channel matrix. The effect is that the total count rate was larger than that obtained using the 6 channel PCA matrix (5det_6ch.rmf) by a factor of 1.143, and that counts in the lowest canonical channel were underestimated.
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This file was last modified on Tuesday, 13-Sep-2005 16:04:36 EDT