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To find and download HEASARC data in the cloud, you can use astroquery.heasarc or download our new tool, hark.

The HEASARC and NuSTAR teams are greatly saddened by the sudden passing of Katja Pottschmidt. Most recently Katja was the lead scientist for the NuSTAR Guest Observer Facility (GOF), a role she had supported for many years. During her science career she worked on many other high energy astrophysics missions and played an integral role in advancing our knowledge of the universe. She was a wonderful colleague and friend and will be keenly missed by all who knew her.

HEASoft and XSPEC are now available as conda packages. See details ....


Getting Help in Xspec

There are multiple places to get help with using Xspec.

  • The Xspec Manual [HTML] [PDF] is the best place to get details about running Xspec.
  • The PyXspec manual [HTML] [PDF] gives specfic guidance for using Xspec's Python interface.
  • Download the walkthrough files [74M] to follow along with the Walks Through Xspec section of the manual.
  • The Release Notes provide details about updates in the latest Xspec version.
  • The Issues & Patches page lists bugs which are patched in the latest update.
  • The FAQ page offers troubleshooting and additional guidance for common questions.
  • See PyXspec-specific troubleshooting for problems that Python users may encounter.
  • Use HEASP [HTML] [PDF], a C/C++/Python library, to manipulate files associated with high energy astrophysics spectroscopic analysis, including table models.
  • The Xspec Facebook group is a way to share questions and answers with others in the community.
  • If help is still needed after exploring the above options, please submit a question via the feedback form (selecting XANADU from the drop down menu).
  • Questions can also be emailed to the Xspec help desk at xspechelp@athena.gsfc.nasa.gov.

Disclaimer of endorsement

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