ROSAT Deep X-Ray Radio Blazar Survey Catalog: 298 Identified Sources
Updated 3mo ago
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Description
The Deep X-Ray Radio Blazar Survey (DXRBS) catalog contains 298 identified astronomical sources, including 234 radio-loud quasars, 36 BL Lacertae objects, and 28 narrow-line radio galaxies. The survey was created by NASA researchers by correlating archived ROSAT PSPC X-ray data with public radio catalogs to find serendipitous flat-spectrum sources. It achieved approximately 90% efficiency in finding radio-loud quasars and BL Lacs, with redshift information available for 96% of the sample.
Use Cases
Analyzing the distribution of blazars in X-ray and radio luminosity parameter space based on the survey's findings.
Studying the population of Flat-Spectrum Radio Quasars (FSRQs) with high X-ray to radio luminosity ratios mentioned in the description.
Comparing the completeness of blazar samples across different survey techniques as discussed in the DXRBS papers.
Investigating the lower luminosity end of the FSRQ luminosity function using the statistically significant low-luminosity sample.
Strengths
Contains 298 identified sources with 96% redshift completeness.
Survey was found to be ~90% efficient at finding radio-loud quasars and BL Lacertae objects.
Reaches faint flux limits of ~50 mJy at 5-GHz radio and a few times 10^-14 erg/cm²/s in X-ray.
More than doubled the number of FSRQs in complete samples within a specific radio luminosity range.
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 ROSAT archive and correlating radio catalogs.
Provenance
Source
National Aeronautics and Space Administration
Collection Method
Correlation of archived ROSAT WGACAT X-ray data with several publicly available radio catalogs.
Time Range
Based on archived ROSAT data; specific observation dates not provided.
Freshness
Last updated 2026-03-13 19:16:27.107406; freshness should be verified.
Geography
Astronomical survey; spatial coverage is the sky as observed by ROSAT.
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