Gamma Ray Quasars
Very energetic galaxies that lie at the outer reaches of the universe sometimes
appear starlike and are called "quasi-stellar" objects, or quasars.
The Compton Observatory established gamma-ray quasars as a class of sources--distant
galaxies radiating mostly in gamma rays.
Compare the quasars in gamma rays versus visible light!
Scientists suspect that a supermassive black hole embedded in the quasar's
core generates narrow jets of material that stream away at high speed. These
jets emit in gamma rays thousands of times more energy than our Milky Way
galaxy emits in all wavelengths.
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