If the emitted beta particle is the antimatter positive electron the disintegration process is termed positron emission. Radioactive decay is sometimes accompanied by the emission of gamma rays and is always accompanied by the transmutation of the atomic nucleus into another element which is more stable. Radio galaxy . A galaxy which is an intense source of radio waves . It is a form of active galaxy .
Radio galaxies are always elliptical galaxies .
The radio emission usually comes from two huge lobes on either side of the galaxy. The lobes themselves can be millions of light years across and are often credited with being the largest single objects in the entire universe. The radio waves are produced by the synchrotron emission process. Radio galaxies are not yet fully understood. Radio telescope .