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Klappentext How can we test if a supermassive black hole lies at the heart of every active galactic nucleus? What are LINERS! BL Lacs! N galaxies! broad-line radio galaxies and radio-quiet quasars and how do they compare? This timely textbook answers these questions in a clear! comprehensive and self-contained introduction to active galactic nuclei - for graduate students in astronomy and physics. The study of AGN is one of the most dynamic areas of contemporary astronomy! involving one fifth of all research astronomers. This textbook provides a systematic review of the observed properties of AGN across the entire electromagnetic spectrum! examines the underlying physics! and shows how the brightest AGN! quasars! can be used to probe the farthest reaches of the Universe. This book serves as both an entry point to the research literature and as a valuable reference for researchers in the field. Zusammenfassung This graduate text provides a clear and comprehensive introduction to one of the most dynamic areas of contemporary astronomy. It presents a systematic review of the observational properties of 'active galactic nuclei'! examines the underlying physics! and shows how quasars can be used to probe the Universe. Inhaltsverzeichnis Preface; Acknowledgements; 1. Basic properties and a brief historical perspective; 2. Taxonomy of active galactic nuclei; 3. The black hole paradigm; 4. Continuum emission; 5. The broad-line region; 6. The narrow-line region; 7. Unified models of AGNs; 8. The environment of AGNs; 9. The geometry of the expanding universe; 10. Quasar surveys; 11. The quasar luminosity function and evolution; 12. Quasar absorption lines; References; Bibliography.
