blazar

A blazar is a type of active galaxy with a supermassive black hole at its center that emits powerful jets of charged particles. When one of these jets points almost directly toward Earth, it creates a highly energetic and variable source of light across the electromagnetic spectrum, from radio waves to gamma rays. Blazars are among the most luminous and energetic objects in the universe, and their brightness and activity can change rapidly. They provide valuable insights into black hole behavior and the extreme physics of jet formation.