The latest observations and theoretical models are combined in this clear, pedagogic textbook for advanced undergraduates and graduate students.This book provides an up-to-date and comprehensive account of quasars and active galactic nuclei - one of the most dynamic topics in astrophysics. The latest observations and theoretical models are combined in this clear, pedagogic textbook for advanced undergraduates and graduate students. Researchers will also find this wide-ranging review invaluable.Detailed derivations of key results ensure the book is self-contained. And throughout, theories and models are critically compared with observations right across the spectrum. All the key topics are covered, including relativistic beaming, accretion disks, gravitational lensing and unification. Particular emphasis is placed on radio, X- and gamma-ray observations - not covered in any previous book.This book provides an up-to-date and comprehensive account of quasars and active galactic nuclei - one of the most dynamic topics in astrophysics. The latest observations and theoretical models are combined in this clear, pedagogic textbook for advanced undergraduates and graduate students. Researchers will also find this wide-ranging review invaluable.Detailed derivations of key results ensure the book is self-contained. And throughout, theories and models are critically compared with observations right across the spectrum. All the key topics are covered, including relativistic beaming, accretion disks, gravitational lensing and unification. Particular emphasis is placed on radio, X- and gamma-ray observations - not covered in any previous book.This book provides an up-to-date and comprehensive account of quasars and active galactic nuclei (AGN). The latest observations and theoretical models are combined in this clear, pedagogic textbook for advanced undergraduates and graduate students. Researchers will also find this wide-ranging and coherent review invaluable. Throughout, detaill“r