News 20230612 - XMM-Newton
XMM-Newton-NEWS #267, 12-Jun-2023XMM-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-DR13 and 4XMM-DR13S
- XSA V16.0 Release with Access to the 4XMM-DR13 and 4XMM-DR13S Catalogues
- SAS Users Guide and Threads Updated for SASV21.0
- XMM-Newton Users' Group: Presentations Available
- Public Data of the Seyfert 1 Galaxy ESO 198-G24
NEW VERSIONS OF THE XMM-NEWTON SERENDIPITOUS SOURCE CATALOGUES: 4XMM-DR13 AND 4XMM-DR13S
A new version of the XMM-Newton EPIC Serendipitous Source Catalogue, 4XMM-DR13, has been 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-DR12. 4XMM-DR13 includes 983948 X-ray detections which relate to 656997 unique X-ray sources from 13243 observations that were public by the 31st December 2022.
4XMM-DR13 covers a total sky area, with at least 1 ks exposure, of 1328 square degrees if overlaps are taken into account, where some regions of the sky have been pointed as many as 90 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 1.43). Median fluxes in the catalogue are ~5.2E-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 the detection catalogue 4XMM-DR13, we release the stacked catalogue 4XMM-DR13s, created from overlapping observations. Some sources have a total of 2.8 Ms of observation. Stacking results in better source parameters, higher sensitivity, and direct access to measures of long-term flux variability. 4XMM-DR13s is built from 1688 groups drawn from 9796 observations. Each group includes between 2 and 372 observations. Stacked source detection is performed on all overlapping exposures of reasonable quality. For lower-quality exposures, parameters are provided from PSF photometry.
4XMM-DR13s contains 401596 sources, of which 310478 have several contributing observations. From the individual observations, almost 1.7 million flux measurements (and related parameters) of all the sources are derived in total during stacked source detection and photometry. 4XMM-DR13s reaches a median depth of ~2.5E-15 and ~6.8E-15 erg/cm2/s in the soft (0.2-2 keV) and hard (2-12 keV) X-ray band, respectively. 7333 sources are variable on the long term.
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-DR13 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:
XSA V16.0 RELEASE WITH ACCESS TO THE 4XMM-DR13 AND 4XMM-DR13S CATALOGUES
A new version of the XMM-Newton Science Archive (XSA V16.0) is available at
XSA V16.0 provides access to the new versions of the 4XMM-DR13 and 4XMM-DR13s Catalogues.
SAS USERS GUIDE AND THREADS UPDATED FOR SASV21.0
The Users Guide to the XMM-Newton Science Analysis System has been updated for SAS v21.0 in order to include the latest information on data analysis methods and updated SAS tasks.
The guide is available from the XMM-Newton Proposer's Info and Manuals Web page (Section: Data Analysis) at
The html version of the SAS Users Guide can be accessed directly under
SAS Data Analysis Threads are already revised and in-line with SAS v21.0.
With the infrastructure of Python in SAS, two new threads have been released under Jupyter Notebooks. The purpose of these threads is to illustrate how to use the Python interface to run SAS from a Jupyter Notebook, see
XMM-NEWTON USERS' GROUP: PRESENTATIONS AVAILABLE
The presentations at the XMM-Newton Users' Group Meeting #24, that took place on May 10th and 11th, are already available at
PUBLIC DATA OF THE SEYFERT 1 GALAXY ESO 198-G24
Observations of the Seyfert 1 galaxy ESO 198-G24 were performed during the tank replenishment activities that took place in XMM-Newton revolutions 4295 and 4296, 22 to 26 May 2023. Two full-revolution observations were obtained, 116ks long each.
These observations (obsids 0930590601 and 0930590801) are already public and both the ODF and the PPS products can be downloaded from the XSA.