The Astrophysical Journal · 1954 · 42 citations · 0 references
Natural SciencesAstronomyPhysicsAstrophysicsRadio AstronomyExtragalactic Radio AstronomyInterstellar Radiation FieldLow-frequency Radio AstronomyAstronomical SourcesExtragalactic Radio ContinuumNebular Continuum EmissionPlanetary NebulaeProtoplanetary NebulaeRadio Continuum EmissionRadio Emission Mechanisms