Lockman Hole X-Ray Point Source Catalog: 409 Sources from XMM-Newton
Updated 3mo ago
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Description
The Lockman Hole, a sky area of low Galactic line-of-sight column density, was observed by the XMM-Newton X-ray observatory between April 2000 and December 2002. The catalog lists positions, count rates, fluxes, hardness ratios, and partial optical classifications for 409 X-ray point sources detected in the central 0.196 square degrees. This table was created by NASA's HEASARC in May 2008 based on the CDS Catalog J/A+A/479/283.
Use Cases
Analyze source distribution and density based on positions and detection likelihood threshold.
Study spectral properties of X-ray sources based on hardness ratios and fluxes.
Cross-match X-ray sources with optical counterparts based on partial optical classifications.
Validate source detection methods based on the reported 4 potentially spurious sources from Monte Carlo simulations.
Strengths
Contains 409 X-ray point sources with multiple measured properties.
Based on a total exposure time of 1.16 Ms (EPIC pn) and 1.30 Ms (EPIC MOS).
Focuses on the Lockman Hole, a scientifically important area of low Galactic foreground absorption.
Analysis performed using the standard XMM-Newton SAS data analysis package.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Row count is unknown, which may limit suitability assessment.
Data was last updated in 2026; freshness should be verified for current research needs.
Provenance
Source
National Aeronautics and Space Administration (NASA HEASARC)
Collection Method
Observations from the XMM-Newton X-ray observatory in 18 pointings, processed with the XMM-Newton SAS data analysis package version 6.0.
Time Range
Observations performed between April 2000 and December 2002.
Freshness
Last updated 2026-03-13 18:55:48.456449
Geography
The Lockman Hole region of the sky.
License is listed as 'other-license-specified'; terms should be reviewed before use.