Taking advantage of the technological advancements since the release of the ROSAT/1RXS catalogs for point-sources (Voges et al. 1999, 2000), we have re-processed and screened the photon event files from the ROSAT all-sky survey, corrected also for astrometry .

We obtained about 135,000 X-ray detections in the 0.1-2.4 keV energy band down to a likelihood threshold of 6.5. Our simulations show that the expected spurious content of the catalogue is a strong function of the detection likelihood, and the full catalogue is expected to contain about 30% spurious detections. Above a likelihood of 9 the catalogue contains about 71,000 detections with a 5% spurious fraction. Intra-day variability in the X-ray light curves was quantified based on the normalized excess variance and a maximum amplitude variability analysis. X-ray spectral fits were performed using three basic models, a power law, a thermal plasma emission model, and blackbody emission. X-ray images and overlaid X-ray contour lines provide an additional product to evaluate the detections visually. Thirty-two large extended regions with diffuse emission and embedded point source were identified and excluded form the present analysis. With the publication of the 2RXS catalogue and its data products, a detailed science specific exploration will now be possible for the astrophysical community. With 2RXS, the deepest and most reliable X-ray all-sky survey catalogue became available before the launch of eROSITA. The experience gained by the HE group at MPE in creating the new catalogue will be incorporated into the data reduction analysis and scientific exploration of the forthcoming eROSITA all-sky survey.

Through this website we provide:

• the Web interface for accessing the X-ray data, X-ray properties, cone search and catalogs, as described in Boller et al. 2016


• The SDSS counterparts to the ROSAT/2RXS and XMMSlew catalogs, as described in Dwelly et al. 2017


• The WISE counterparts to the aLL-sky ROSAT/2RXS and XMMSlew catalogs, as described in Salvato et al. 2017 (in prep)

Aitoff projection in Galactic coordinates of the sky distribution of 2RXS sources. The size of the symbols scales with source count rate and the colours represent different spectral characteristics (increasing hardness ratio from red to blue).