Blazars are a type of active galactic nucleus (AGN) that are characterized by their extremely high luminosity and variability across the electromagnetic spectrum. They are powered by supermassive black holes at the centers of galaxies, which are accreting large amounts of matter. Blazars are known for their intense emission of gamma rays, X-rays, and radio waves, and often exhibit rapid and unpredictable changes in their brightness. These characteristics make them important objects of study for astrophysicists, as they can provide insights into the physics of black hole accretion and jet formation. Researchers study blazars using a variety of observational techniques, including radio, optical, and gamma-ray telescopes. By analyzing the emission properties and variability of blazars, scientists can gain a better understanding of the processes occurring near supermassive black holes and how they impact the surrounding environment.