When the jet of an active galaxy is aimed directly at Earth,we see the object as a:

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When the jet of an active galaxy is aimed directly at Earth, we see the object as a BL Lacertae object. BL Lacertae objects are a type of active galactic nucleus that are characterized by their rapid and unpredictable variability across all wavelengths, particularly at radio and x-ray wavelengths. They are thought to be powered by a supermassive black hole at the galaxy's center, which is actively accreting material and emitting vast amounts of radiation along a narrow jet-like beam that happens to point directly at Earth.

When the Jet of an Active Galaxy Is Aimed Directly