GMRT XMM-LSS 610-MHz Radio Source Catalog with 1037 Entries

1037 radio source entries from Giant Metrewave Radio Telescope observations at 610 MHz in the XMM-Large Scale Structure field. The catalog includes 592 single sources and 445 components of multiple sources, complementing earlier surveys at 74, 325, and 1400 MHz to form a multifrequency catalog of 1611 sources. This table was created by NASA HEASARC in February 2012 based on the original catalog J/A+A/471/1105.

Use Cases

• Cross-matching radio sources with X-ray and optical emission data to study environmental connections.
• Analyzing spectral properties and ageing of radio sources based on multifrequency flux density measurements.
• Training models for radio source component detection and classification based on brightness ordering.
• Validating astrometry and flux density consistency across different radio survey catalogs.

Strengths

• Multifrequency catalog combining 610 MHz data with 74, 325, and 1400 MHz surveys for 1611 total sources.
• High sensitivity with a noise level of ~0.3 mJy/beam at 610 MHz over a 12.7 square degree field.
• Includes detailed component breakdown for multiple sources, listed in order of decreasing brightness.

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 observational bias inherent to the specific radio telescope and survey field.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC), based on catalog J/A+A/471/1105.

Collection Method

Radio observations from the Giant Metrewave Radio Telescope (GMRT) at 610 MHz.

Time Range

Observations likely correspond to the period of the original study, but specific date range is not provided.

Freshness

Last updated 2026-03-13 19:32:25.298681; freshness should be verified.

Geography

Centered on the XMM-LSS field at RA (J2000) = 2h24m00s, Dec (J2000) = -4°09'47".