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Unformatted text preview: Means source must be less than a few light hours across In other words, its generated in a volume of space not much bigger than our solar system Radio galaxy-active galactic nucleus is power source-drives two jets of particles outwards in opposite directions at nearly c-shoot far beyond bounds of stars in galaxy-the place where jets ram into gas show up as hot spots within radio lobes-basically the same as quasar What power quasar and other active galactic nuclei?-super massive holes-stuff ffalling in is converted into KE and collisions between falling stuff turns from KE to Thermal energy-an amount of matter greater than Sun pass through accretion disk and falling into black hole each year to produce so much luminosity-faster rotation of black hole release more energy-radiation not from hole but from accretion disk around it...
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- Fall '07