by Rupintor - uploaded on July 31, 2018, 11:53 pm
It is an Active Galactic Nucleus (AGN). A blazar (this kind of object includes BL Lacertae objects and optically violently variable quasars) can be a quasar or a radiogalaxy. These three objects can be one. For each spatial position it appears in front of the observer it receives a specific name.