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.
A service of the Laboratory for High Energy Astrophysics at
Goddard Space Flight Center
Technical Rep: Jay Norris
Web Curator: J.D. Myers
Viewing The Violent Universe was created by
Joslyn Schoemer, Stephanie Leitner and Tom Chi.
Questions and comments may be sent to Joslyn Schoemer at