In quasars uye mamwe marudzi AGN, dema gomba rakakomberedzwa negasi accretion dhisiki. Sezvo gasi anodonha akananga dema gomba, simba anosunungurwa muchimiro electromagnetic nemwaranzi, izvo zvinogona kuonekwa mhiri electromagnetic chakarondedzera. The simba radiated ne quasars rakakura: kupfuura simba quasars vane luminosities zviuru nguva yakakura kupfuura imwe renyeredzi yakadai Milky Way.
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