blazar

  1. Noun.  (galaxy) A highly variable active galaxy, characterized by a very compact and highly variable energy source (a supermassive black hole) at the center and its strong optical polarization and variability.
  2. Noun.  (galaxy) Collectively, optically violent variable quasars and BL Lac objects.

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This entry was last updated on RefTopia from its source on 3/20/2012.