HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.

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New issues from Xspec 12.14.1

Frequently Asked Questions

List of currently outstanding issues.

Patches

Latest update 12.14.1d (Oct 02, 2024)

Requires patch installer v4.19

For details about the patch installer, including options available with the latest v4.19, see the installer notes

To apply patches, you'll need to have downloaded and already built the source code distribution of XSPEC. Your HEADAS environment variables must also be initialized, such as with the headas-init script as you would if you were running XSPEC.

To update your XSPEC installation with ALL listed patches:

  1. If you don't already have the patch installer tcl script (v4.19), download and place it in the heasoft-[ver]/Xspec/src directory in the source code distribution.
  2. Download the latest patchfile into the same directory. There is no need to unzip/untar the patchfile since the installer will do that.
  3. At the command line, launch the script by typing
    'tclsh patch_install_[ver].tcl', and that's all.

The script will detect which patches you've installed previously, copy the new code files to the necessary directories, determine whether complete or only partial rebuilds are necessary, and finally perform the rebuilds. Numbers listed in red indicate that the patch modifies the interface to one or more of XSPEC's libraries. These patches will generally cause longer rebuilds. If you have a local model library, it is recommended (though not always necessary) that you rebuild it with initpackage after applying red patches.

12.14.1a The default hard and soft limits for the 'frac_th' parameter of the sssed model are not being set properly. Our thanks to Doug Burke for reporting this. Report added on Sep 09, 2024.

This patch modifies Xspec/src/manager/ model.dat

12.14.1b Memory errors in routines called by the ismabs model may cause a crash. Our thanks to Doug Burke for reporting this. Report added on Sep 09, 2024.

This patch modifies Xspec/src/XSFunctions ismabs.f90 and src/XSUtil/Numerics LinearInterp.cxx

12.14.1c Enabling mdefine to work with polarization models. Our thanks to Michal Dovciak for reporting this. Report added on Sep 26, 2024.

This patch modifies Xspec/src/XSFunctions/Utilities MdefExpression.cxx

12.14.1d This fixes two problems in the Voigt line profile. The first is that the Lorentzian width parameter was being used as though it was the HWHM, not the FWHM. The second is that an error was introduced in the normalization when making the change to normalizing from 0 to infinity instead of -infinity to infinity. Report added on Oct 02, 2024.

This patch modifies Xspec/src/XSFunctions/ calcLines.cxx

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Last modified: Wednesday, 02-Oct-2024 16:07:59 EDT

HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.