ROSAT/NVSS Bright X-Ray and Radio Source Catalog with 1,557 Objects

A 2003 cross-identification of the ROSAT All-Sky Survey Bright Source Catalog with the NRAO VLA Sky Survey created a sample of 1,557 bright X-ray sources that are also radio sources. The sample covers a 7.8 steradian solid angle of extragalactic sky with galactic latitude |b| > 15 degrees and declination > -40 degrees. This table was created by NASA's HEASARC based on source data from the CDS.

Use Cases

• Analyzing the correlation between X-ray and radio emission in astronomical sources based on the cross-identified sample.
• Studying the composition and low average redshift (~0.1) of a mixed population of galaxies, Seyfert galaxies, quasars, and clusters.
• Training models for source classification based on multi-wavelength (X-ray, radio, optical) properties mentioned in the description.

Strengths

• Contains 1,557 objects, providing a substantial sample size for analysis.
• Combines data from two major sky surveys (RASS and NVSS) for reliable multi-wavelength identification.
• Covers a large, 7.8 steradian area of the extragalactic sky with defined galactic latitude and declination cuts.

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 20:11:18.986220; freshness should be verified.

Provenance

Source

NASA HEASARC, based on CDS Catalog J/ApJS/129/547.

Collection Method

Cross-identification of the ROSAT All-Sky Survey Bright Source Catalog with the NRAO VLA Sky Survey.

Time Range

Based on surveys conducted in the 1990s; catalog created in September 2003.

Freshness

Last updated 2026-03-13 20:11:18.986220

Geography

Extragalactic sky with galactic latitude |b| > 15 degrees and declination > -40 degrees.