The EXTraS Archive is Online!

The EXTraS Catalogues and Products go public: you can browse, preview, and download them through our Archive interface. You will also find documentation that describes them and indications on how to use them and give proper credits to the EXTraS project.



Exploring Hidden Treasures

“Variability pervades the cosmos. Studies of variability dominate research in astronomy and astrophysics and are so common that very many groups, projects and instruments are dedicated to the examination of just one form of variability, or one aspect of its diverse manifestations.” (manifest of the IAU Symposium 285, “New Horizons in Time Domain Astronomy”, University of Oxford September 19-23, 2011)

Like a treasure-hunt, the the EXTraS project (Exploring the X-ray Transient and variable Sky) is going to harvest the hitherto unexplored temporal domain information buried in the serendipitous data collected by the European Photon Imaging Camera (EPIC) instrument onboard the ESA XMM-Newton, in 13 years of observations.


A new EXTraS paper, "Discovery of periodic dips in the brightest hard X-ray source of M31 with EXTraS", has been accepted... 
The EXTraS Archive is Online! Click here to browse through all the EXTraS products. Catalogues, light curves, power... 
An exciting result from EXTraS: the extreme ULX in NGC 5907, one of the best intermediate mass black hole candidates, is...