eROSITA eFEDS: 246 Hard X-Ray Point Sources Catalog

246 X-ray sources were detected in the 2.3-5.0 keV energy band above a detection likelihood of 10. The catalog is derived from the eROSITA Final Equatorial Depth Survey (eFEDS) field, covering approximately 140 square degrees, and was produced by the eROSITA team on board the Spectrum-Roentgen-Gamma (SRG) observatory. This table was ingested by the HEASARC in August 2022 and revised in June 2024.

Use Cases

• Cross-matching X-ray sources with optical or infrared catalogs based on provided source positions.
• Analyzing the flux distribution of hard X-ray point sources based on multi-band flux measurements.
• Validating X-ray source detection algorithms using the documented simulation-calibrated procedures.
• Studying the population of extragalactic or galactic X-ray emitters in a well-defined survey field.

Strengths

• Detection procedures were optimized and calibrated using realistic simulations of the observations.
• Cross-matching with previous XMM-ATLAS observations confirmed excellent agreement in source fluxes.
• Focuses on a specific, high-energy (2.3-5.0 keV) band with a defined detection threshold (likelihood > 10).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown for this specific hard-band sample, which may limit suitability assessment.

Provenance

Source

eROSITA-DE Early Data Release, processed by the HEASARC.

Collection Method

Scanning observations by the eROSITA X-ray telescope during its performance verification phase.

Time Range

Observations are part of the early data release; specific observation dates are not provided.

Freshness

Last updated 2026-03-13 17:44:33.813196; freshness should be verified.

Geography

Covers the eROSITA Final Equatorial Depth Survey (eFEDS) field, approximately 140 square degrees on the sky.