ATPMN: Southern Radio Source Catalog with 9,040 Sources

9,040 radio sources cataloged from high-resolution Australia Telescope Compact Array observations of Parkes-MIT-NRAO (PMN) sources. The catalog lists flux density and structural measurements at 4.8 and 8.6 GHz for sources in the southern sky, with data gathered between 1992 and 1994. It was created by the HEASARC in July 2012 and is provided by the National Aeronautics and Space Administration.

Use Cases

• Cross-matching radio sources with gamma-ray catalogs based on the 133 probable/possible Fermi LAT associations mentioned.
• Analyzing radio source spectral properties based on spectral index computed between 4.8 and 8.6 GHz.
• Studying source morphology and structure based on elliptical Gaussian model parameters.
• Assessing positional accuracy and uncertainties using the provided ra_accuracy and dec_accuracy parameters.

Strengths

• Contains 9,040 discrete radio sources derived from 8,385 parent PMN sources.
• Provides flux density measurements at two frequencies (4.8 and 8.6 GHz) with uncertainties.
• Includes 133 probable or possible associations with Fermi Large Area Telescope gamma-ray sources.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect temporal bias inherent to the 1992-1994 observation period.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations made with the Australia Telescope Compact Array (ATCA).

Time Range

1992-1994

Freshness

Last updated 2026-03-13 20:04:47.810915; freshness should be verified.

Geography

Southern sky declination range -87 degrees < Dec < -38.5 degrees, excluding galactic latitudes |b| < 2 degrees.