GMRT ELAIS-N1 Field: 610-MHz Radio Source Catalog of 2500 Objects

NASA HEASARC provides a catalog of 2500 radio sources detected above a 6-sigma threshold from Giant Metrewave Radio Telescope observations. The data covers approximately 9 square degrees of the ELAIS-N1 field at 610 MHz, with pointings achieving an rms sensitivity between ~40 and ~70 microJansky. This table was created in February 2012 based on a published CDS catalog.

Use Cases

• Calculate 610-MHz radio source counts based on the catalog's flux density data.
• Study the turnover in differential number counts below 1 mJy as referenced in the description.
• Cross-match radio sources with existing optical and infrared data for the ELAIS-N1 region.
• Analyze source distribution and properties across a ~9 square degree field.

Strengths

• Contains 2500 detected radio sources, providing a substantial sample for analysis.
• Covers a total area of ~9 square degrees with a resolution of 6 x 5 arcsec.
• Includes deep observations with an rms sensitivity of ~40 microJansky for four pointings.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last updated 2026-03-13 19:35:45.040016; freshness should be verified.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC), based on CDS Catalog J/MNRAS/383/75.

Collection Method

Observations from the Giant Metrewave Radio Telescope, with data reduction and mosaicking techniques described in a reference paper.

Time Range

Observational date range not specified; catalog created February 2012.

Freshness

Last updated 2026-03-13 19:35:45.040016.

Geography

Covers the European Large-Area ISO Survey-North 1 (ELAIS-N1) field.