ROXA (Radio-Optical-X-ray at ASDC) Blazars Catalog

Although blazars are a small fraction of the overall AGN population, they are expected to be the dominant population of extragalactic sources in the hard X-ray and gamma-ray...

NASA Open Data Portal10

ROSAT Deep X-Ray Radio Blazar Survey Catalog

The authors have undertaken a survey, the Deep X-Ray Radio Blazar Survey (DXRBS), of archived, pointed ROSAT Position Sensitive Proportional Counter (PSPC) data for blazars by...

NASA Open Data Portal00

All-Sky Optical Catalog of Radio/X-Ray Sources

The Quasars.org (QORG) Catalog is an all-sky optical catalog of radio/X-ray sources. The QORG Catalog aligns and overlays the year 2001/2 releases of the ROSAT HRI, RASS, PSPC...

NASA Open Data Portal00