With the exception of a few supernova remnants which are in our galaxy, most cosmic radio sources are “radio galaxies”. Although flare stars do emit radio waves occasionally, no ordinary stars with strong, steady radio emission have been found. The typical optical power of stars is from (white dwarfs) to (super giants). For comparison, the optical power of the sun is The typical radio power of supernova remnants is around For a giant galaxy (containing approximately stars with a total mass of around where ), the optical power is around Radio emission from normal galaxies is generally weaker, the power ranging from For certain peculiar galaxies, the so‐called “radio galaxies,” the radio emission rate ranges from
Hong‐Yee Chiu; Gravitational collapse. Physics Today 1 May 1964; 17 (5): 21–34. https://doi.org/10.1063/1.3051610
Download citation file:
Sign in via your InstitutionSign in via your Institution
Purchase an annual subscription for $25. A subscription grants you access to all of Physics Today's current and backfile content.