Dear ACIS users,
we have updated the xspec model ACISABS1.1
to account for the recent estimates made by Catherine Grant(MIT) of
the decay rate of the ratio of the Mn+Fe-L line complex
to the Mn-Ka line complex.
The decay rate is modelled by the function:
R(t) = norm*double(exp(-tauinf*(1.d0 - exp(-t/tefold))))
with norm = 0.00722 +/- 0.00007
tefold = 620. +/- 66.
tauinf = 0.582 +/- 0.024
based on Allyn Tennant's and Steve O'Dells(MSFC) fits to
the observed decay rate.
You can obtain the xspec model ACISABS from
or go directly to
This archive was generated by hypermail 2b29 : Sun May 19 2013 - 01:00:07 EDT