SPEX is a software package optimized for the analysis and interpretation of high-resolution cosmic X-ray spectra. The software is especially suited for fitting spectra obtained by current X-ray observatories like XMM-Newton, Chandra, Suzaku, and Hitomi. SPEX will be continuously improved to handle spectra from high-resolution X-ray instruments on future missions like Athena.

The advantages of SPEX 3.0

  • Fast fitting due to efficient memory and multi-core CPU usage
  • Optimal design of response matrices
  • Fit multiple spectra with different model components simultaneously
  • Handles highly complex models with many free parameters
  • Wide range of models available based on single atomic database
  • Contains up-to-date atomic data
  • Easy to fit grating spectra of spatially extended sources


Important Note

If you use SPEX for research that will appear in a scientific publication, then please add a reference to Kaastra, Mewe and Nieuwenhuijzen (1996). See ADS for a full reference.