2–5 Jun 2026
ICE-CSIC Barcelona
Europe/Madrid timezone

Highly Variable Sources in the XMM Slew Survey

4 Jun 2026, 10:25
15m
ICE-CSIC Barcelona

ICE-CSIC Barcelona

C/ de can magrans, s/n, Cerdanyola del Vallès (Barcelona) 08193, Spain

Speaker

Robbie Webbe (IRAP, Toulouse, France)

Description

The newest edition of the XMM Slew Survey catalogue incorporates more than eight years of new observations, adding nearly 70,000 new detections of sources to the previous version. With an extended baseline now covering more than 20 years of observations the Slew catalogue presents an opportunity to detect bright, long-period, variable sources.

By cross-matching the sources in the XMM Slew Catalogue v3 against ROSAT, eROSITA, XMM pointed observation and Swift source catalogues, and upper limits from some of these observatories, we have identified a large population of highly variable X-ray sources. In some cases these sources exhibit variability over several orders of magnitude, which is a strong indicator for astrophysical sources powered by compact objects. Many of these sources have not been identified as significantly variable before. We will present the population of significantly variable sources, and identify different kinds of X-ray sources such as tidal disruption events, strongly varying AGN and bursting X-ray binaries.

Primary author

Robbie Webbe (IRAP, Toulouse, France)

Presentation materials