PIMMS Version s2.1a Release Notes
This version contains these new features and updates:
- A new version of
the XTE PCA effective area curve (see below for details).
- The HEAO-1 A4 LED
effective area is now available, giving the ability to predict count rates in
the 4 bands used by Levine et al (1984, ApJS 54, 581).
- The Spectrum-X-Gamma
SODART (with LEPC, HEPC, and SIXA) effective area is now included.
- The SAX
(with LECS, MECS, HPGSPC, PDS and WFC) effective area is now included.
- A number
of miscellaneous bug fixes have been implemented.
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.
UK mirror maintained by:
Dr. Duncan Law-Green, LEDAS
Support Scientist (email@example.com),
This file was last modified on Tuesday, 30-Jan-2001.