Blazar

Blazars ( neologism of " BL Lac " and " Quasar " or abbreviation "blazing quasi- stellar objects" ), sometimes called blazars, are a sub- class of so-called active galactic nuclei with often increased emission of radiation energy or particles in comparison to other galaxies. Other subclasses are radio galaxies, Seyfert galaxies and quasars. It is believed that blazars differ from other active galactic nuclei by the observation direction, which coincides with the blazars with the direction of relativistic jets.

In blazars are highly energetic galactic objects, from whose center is up to 50 percent of the votes of the entire galaxy radiation. Currently, the intuition is that the radiated energy of the disk- shaped arrangement of matter escapes that transforms a supermassive black hole in the core zone or in the complex process of accretion and the " devouring " enabled. The energy radiation ( jet stream ) is perpendicular to the flow of matter level. The blazars vary the emission of radiant energy or particles much stronger and faster than quasars ( within hours to weeks). They appear to us as a point light source, highly polarized and nearly free of spectral lines. The first description of such objects was made in the early 1960s by Benjamin Markarian.