Sentences with phrase «of active galaxies powered»
The ideal background «lights» for such a study are quasars, which are very distant bright cores of active galaxies powered by black holes.
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Quasars are believed to be powered by accretion of material onto supermassive black holes in the nuclei of distant galaxies, making these luminous versions of the general class of objects known as active galaxies.
A team of scientists from 17 countries have found the most likely origin of galactic cosmic rays - the centres of distant galaxies (Active Galactic Nuclei) powered by supermassive black holes.
«Using space VLBI, we can probe the cores of quasars and active galaxies, believed to be powered by super massive black holes,» said Dr. Robert Preston, project scientist for the U.S. Space Very Long Baseline Interferometry project at JPL.