News 20201210 - XMM-Newton
XMM-Newton-NEWS #238, 10-December-2020XMM-Newton Science Operations Centre at
ESA's European Space Astronomy Centre,
P.O. Box - Apdo. 78, 28691 Villanueva de la Cañada Madrid, Spain
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- New versions of the XMM-Newton Serendipitous source catalogues: 4XMM-DR10 and 4XMM-DR10S and a new citizen science project for XMM-Newton data, CLAXSON
- New version of the XMM-Newton OM catalogue (XMM-OM-SUSS5.0)
- XSA v13.0 release with access to 4XMM DR10, 4XMM DR10S and XMM-OM-SUSS5.0 catalogues
- Scientific validation report for SAS v19.0
- Happy Birthday, XMM-Newton!
NEW VERSIONS OF THE XMM-NEWTON SERENDIPITOUS SOURCE CATALOGUES: 4XMM-DR10 AND 4XMM-DR10S AND A NEW CITIZEN SCIENCE PROJECT FOR XMM-NEWTON DATA, CLAXSON
To coincide with the 21st anniversary of the launch of XMM-Newton, a new version of the XMM-Newton EPIC Serendipitous Source Catalogue, 4XMM-DR10, is being released by the XMM-Newton Survey Science Centre (XMM-SSC) in collaboration with the SOC.
This version includes an extra year of data with respect to 4XMM-DR9. 4XMM-DR10 includes 849991 X-ray detections which relate to 575158 unique X-ray sources from 11647 observations that were public by the 31st December 2019. 4XMM-DR10 covers a total sky area, with at least 1 ks exposure, of ~1192 square degrees if overlaps are taken into account, where some regions of the sky have been pointed as many as 74 times. Around 9% of all the detections are classified as extended, and spectra and time series have been extracted for 36% of the detections. The median positional uncertainty of the catalogue detections is 1.57 arcseconds (with a standard deviation of 1.44). Median sensitivities in the catalogue are ~5.3E-15 and ~1.2E-14 erg/cm2/s in the soft (0.2-2 keV) and hard (2-12 keV) X-ray band, respectively.
With 4XMM-DR10, we also release 4XMM-DR10s, a version of the catalogue created from overlapping observations. Stacking observations provides longer effective exposure times, resulting in better source parameters and higher sensitivity. 4XMM-DR10s is built from 1396 stacks (or groups) with 7803 contributing observations. Most of the stacks are composed of 2 observations and the largest has 352. The catalogue contains 335812 sources, of which 256213 have several contributing observations. 7969 good quality sources are variable on the long term.
The catalogue is described in the paper Webb et al. (2020) and the stacked catalogue is further described in Traulsen et al. (2020). Details of the catalogue, the catalogue files and full 4XMM documentation are available on the XMM-SSC webpages at
FITS files containing summary information about the observations used in the catalogue are also provided. FITS and CSV versions of the full 4XMM catalogue and a slimline version of the FITS file are also available for download at
The slimline version of 4XMM-DR10 has only one row per unique source (rather than per detection as in the main catalogue) and a reduced number of columns that essentially pertain to the unique source quantities.
Alongside the XSA user interface, 4XMM is also distributed through:
In parallel we are releasing a citizen science project, CLAXSON, which allows the general public to participate in the identification of the X-ray sources in the 4XMM-DR10 catalogue. The platform can be reached directly at
and via the XMM-Newton SSC webpages.
NEW VERSION OF THE XMM-NEWTON OM CATALOGUE (XMM-OM-SUSS5.0)
The fifth version of the XMM-Newton Optical Monitor (OM) Serendipitous Ultraviolet Source Survey Catalogue (XMM-SUSS5) has been released.
XMM-OM-SUSS5 contains data from 10628 observations, obtained between February 2000 and February 2020. The catalogue comprises photometric measurements from 8.86 million detections of sources observed with one or more optical and/or uXMM-OM-SUSS5 contains data from 10628 observations, obtained between February 2000 and February 2020. The catalogue comprises photometric measurements from 8.86 million detections of sources observed with one or more optical and/or ultraviolet filters, in fields generally observed contemporaneously with the XMM-Newton EPIC cameras. These detections correspond to 5.97 million unique sources, of which 1.12 million have more than one detection in the catalogue, thus facilitating the analysis of potential variability on timescales of days to years.
The XMM-OM-SUSS5 catalogue can be accessed through the XSA search interface. Besides, both the complete catalogue and a reduced version can be downloaded from the XSA web page:
The catalogue fundamentals are described in Page et al. (2012).
XSA V13.0 RELEASE WITH ACCESS TO 4XMM DR10, 4XMM DR10S AND XMM-OM-SUSS5.0 CATALOGUES
A new version of the XMM-Newton Science Archive (XSA v13.0) is available at
XSA v13.0 provides access to the new versions of 4XMM DR10, 4XMM DR10S and XMM-OM-SUSS5.0 Source Catalogue.
SCIENTIFIC VALIDATION REPORT FOR SAS V19.0
The results of the scientific validation of SAS v19.0 have been summarised in a report available under the SAS Scientific Validation page
HAPPY BIRTHDAY, XMM-NEWTON!
XMM-Newton was launched on the 10th of December 1999 at 14:32 GMT on an Ariane 5 from the European spaceport at Kourou, French Guiana.
Today, XMM-Newton is celebrating its 21st anniversary.
Thank you for your support and interest in the mission!