Concepedia
Scientific American · 1980 · 19 citations · 0 references
Natural SciencesAstronomyPhysicsAstrophysicsObservational AstronomyX-ray AstronomyExtragalactic X-ray SourcesObservational TechniquesX-ray BinariesX-ray DetectorsX-ray OpticsX-ray TelescopesAstronomical X-ray DetectionUltra-luminous X-ray SourcesX-ray Surveys