Sentences with phrase «nearby active galactic nuclei»
The source directions of the most energetic cosmic rays correlate with locations of nearby active galactic nuclei, implying that they form from supermassive black holes.
http://science.sciencemag.org/
In 2007 astronomers working at Auger traced some of the ultrahigh - energy cosmic rays to nearby active galactic nuclei, the turbulent centers of violent galaxies.