Come analyze HEASARC, IRSA, and MAST data in the cloud! The Fornax Initiative is now welcoming all interested beta users.
Important
Spectral model data files are now distributed separately from HEASoft. After installing HEASoft 6.37+, you must download the model data files separately using ftgetmodeldata in order to use those models. See the spectral model data files page for details.
Historical Xspec Information
- Details of design and implementation of Xspec v12.
- An archive of the Xspec v11 manual.
- Additional discussion about the conception of Xspec can be found in the Introduction to the Xspec Manual.
- Background in Xspec as a component of the XANADU package.
- Table of Xspec version numbers inside the HEASoft package.