PiGSS: Allen Telescope Array 3.1-GHz Multi-Epoch Radio Source Catalog

A catalog of approximately 200 radio sources per field from deep 3.1-GHz observations of four sky fields (ELAIS-N1, Coma, Lockman Hole, NDWFS). The data comprises 459 repeated observations taken approximately daily between May 2009 and April 2011 by the Allen Telescope Array, covering 11.8 square degrees per image. The HEASARC created this table in March 2013 based on source lists from a 2013 paper.

Use Cases

• Searching for transient radio sources based on multi-epoch observations mentioned in the description.
• Analyzing source variability over timescales from days to years based on the daily cadence and deep field comparisons.
• Comparing radio source catalogs to legacy surveys as performed by the authors.
• Placing statistical upper limits on transient event rates based on the derived constraints in the description.
• Studying the properties of sources detected simultaneously at two closely spaced frequencies (3.04 and 3.14 GHz).

Strengths

• Observations span approximately two years (May 2009 to April 2011) with a short daily cadence.
• Covers a large area per image (11.8 square degrees) across four distinct sky fields.
• Provides deep field rms noise levels between 180 and 310 microJansky.
• Sources are confirmed via independent detection in two simultaneous frequency bands, reducing false positives.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Radio continuum observations from the Allen Telescope Array.

Time Range

2009 May to 2011 April

Freshness

Last updated 2026-03-13 17:35:09.338262; freshness should be verified.

Geography

Observations of the ELAIS-N1, Coma, Lockman Hole, and NOAO Deep Wide Field Survey (NDWFS) sky fields.