⭐ QUASARS: ASTRONOMY FOR BEGINNERS

Quasars are part of a very special family of galaxies: galaxies with active nuclei. This family includes Seyfert galaxies, radio galaxies, and blazars. They all contain a supermassive black hole at their core, which could well explain galaxy formation. Presentation: Sébastien Beaucourt, science mediator at the Reims Planetarium. VIDEO CONTENT: 00:00: Intro 01:03: Discovery of Quasars 04:40: Seyfert Galaxies 05:37: Radio Galaxies 07:10: Blazars 08:35: Supermassive Black Holes 10:27: Unified Model 13:40: Origin of Jets 16:00: Eddington Limit 16:46: A Brief Phenomenon 17:40: Unresolved Questions 18:25: Key Takeaways SOURCES: D.U. "Lights on the Universe", Paris Observatory (2022) D.U. Astronomy and Astrophysics, Paris-Sud XI University / CNED (2004) SEGUIN and VILLENEUVE, Astronomy and Astrophysics, 2nd edition, De Boeck University (2002) #astronomy #astrophysics