XMM-Newton Slew Survey: 219 Extragalactic X-ray Sources

487 X-ray sources were detected in the XMM-Newton Slew Survey's hard 2-10 keV band at high galactic latitude. The HEASARC created this table in December 2012, which contains a defined sample of 219 galaxies and active galaxies from that survey. The authors note the survey reaches a flux sensitivity of roughly 3e-12 erg/cm²/s in the 2-10 keV band.

Use Cases

• Analyzing the log N - log S distribution of extragalactic X-ray sources based on the hard-band selected sample.
• Cross-matching X-ray source catalogs with multi-wavelength surveys based on the described cross-correlation methodology.
• Studying biases in shallow, wide-area X-ray surveys, such as Eddington bias and bias against extended sources, as noted in the description.
• Investigating the properties of X-ray bright active and normal galaxies selected in the 2-10 keV band.

Strengths

• Covers a significant fraction of the sky, providing broad X-ray bandpass coverage.
• Offers better sensitivity in the 2-10 keV band than other all-sky surveys available at the time of publication.
• The extragalactic sample of 219 sources matches well to established survey measurements at bright and faint fluxes.

Limitations

• The survey is described as shallow and may be strongly affected by Eddington bias and a bias against detecting extended sources like galaxy clusters.
• A significant fraction of detections at the low-count limit may be spurious, as noted by the authors.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

NASA HEASARC, based on CDS Catalog J/A+A/548/A99.

Collection Method

Sources detected in the XMM-Newton Slew Survey (XSS) hard band, with identifications via cross-correlation with published catalogs.

Time Range

Based on survey data up to and including release XMMSL1d2.

Freshness

Last updated 2026-03 13 18:57:03.901310; freshness should be verified.

Geography

High galactic latitude sky coverage.