XSPECtor

The latest release of XSPEC is now available from the usual place . The release notes are as follows : New features: - New models: c...

We have made available a number of XSPEC bug patches/enhancements over the last couple of months and these are summarized below. They can be...

The Metropolis-Hastings algorithm used by XSPEC for Markov Chain Monte Carlo requires a choice of proposal distribution. Finding the best d...

The new XSPEC release includes some improvements to the fit command. The most visible is an additional column in the output during the fit....

Dacheng Lin has pointed out that the Tcl script simftest.tcl which can be run from the XSPEC command line using the command simftest does n...

XSPEC uses statistics for two purposes: 1) determining the best-fit parameter and its uncertainties; and 2) checking whether the model is a ...

XSPEC v12.8 is now available as part of HEAsoft 6.13. This is the first of several posts on new features in v12.8. The parallel command t...

I recently installed a new version of WebSpec which fixes security holes and adds some new features. Since the security fixes might be helpf...