A class of active galactic nuclei characterized by high variability in flux and polarization; a large fraction exhibits apparent superluminal motion, indicating relativistic flow.
An object which consists of a supermassive black hole that emits an intense beam of particles and light over a broad frequency range from radio waves to gamma-rays.
A type of AGN that often appears as a point-like source of bright, highly variable radiation.
a galaxy with a very compact and highly variable energy source at the center of the host galaxy
a quasar with its jet pointed straight at us
a type of galaxy , related to quasar s and BL Lacertae objects , which displays extremely intense, broad and rapidly varying electromagnetic radiation
Type of active galaxy named after an object in the constellation of Lacerta, the BL Lacertae object. They form a subset of the quasar population. The emission of blazars is highly variable. The activity may be caused by jets of gas being expelled from the central region of the active galaxy, i.e. the supermassive black hole in the active galactic nucleus.
A blazar is a type of extreme quasar. These extremely energetic objects emit jets of gamma rays and other electromagnetic radiation.
broader term including BL Lacertae objects and those quasars which share their characteristics of unusually weak spectral features, plus strong and rapid variability.
A type of active galaxy that varies in brightness over several years. The peculiar appearance and variability associated with these objects may be a result of our viewing perspective. Blazars seem to eject material at superluminal speeds, between 5 and 10 times the speed of light. This apparent violation of the laws of Special Relativity is caused by the angle at which we view the superluminal matter.
A blazar is a very compact and highly variable energy source associated with a supermassive black hole at the center of a host galaxy. Blazars are among the most violent phenomena in the universe and are an important topic in extragalactic astronomy.