WEBSITE OVERVIEW

This website provides experimental access to the STONKS long-term variability estimator for XMM-Newton data. It is provided by the ACDS in Strasbourg, and is based on a compilation of multi-mission archival X-ray data.

What STONKS does: if you provide an EPIC source list (*EP*OBSMLI* file), it will compare their positions and fluxes to any known archival X-ray data, including prior upper limits. If such data is available, STONKS:

• Estimates the long-term variability of the source,
• Builds a multi-instrument lightcurve,
• Builds approximate multi-instrument spectra, using the available band photometry for each mission.

Results are then returned in the form of a tar ball, containing one PDF file for each variable source in the observation. For further information on the methods and approximations, see the online documentation.

Please note that it is in its early beta stage...