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An X-Ray Spectral Fitting Package

User's Guide for version 11.3

Helpful information available includes:

Link to download and install instructions page

User Manual

XSPEC v11.3.2 release notes

known issues with the current release

More models for XSPEC v11.3

Using the MINUIT library in XSPEC

Background Subtraction

Spatial-Spectral Fitting of Clusters with ASCA data

advice on writing the various FITS file formats used by XSPEC

example Tcl scripts for the tcl/tk-based user interface.

WEBSPEC A WWW interface for XSPEC. Currently, it can be used to simulate spectral data for a variety of X-ray missions/instruments.

The manual for XSPEC v.11.3 is available in three formats:

Compressed Postscript

Adobe Acrobat (link to free download for reader) Portable Document Format (PDF)

HTML (unzip/untar this file in its own directory)

The latest XSPEC reference is ... Arnaud, K.A., 1996, Astronomical Data Analysis Software and Systems V, eds. Jacoby G. and Barnes J., p17, ASP Conf. Series volume 101.

Xspec Home Page

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Please send all suggestions for improvements and reports of errors in this manual to :

Keith Arnaud (kaa@genji.gsfc.nasa.gov)

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