The book gives an overview on the current knowledge of the Active Galactic Nuclei phenomenon. The spectral energy distribution will be discussed, pointing out what can be observed in different wavebands and discussing different physical models.

1 Active Galactic Nuclei: A summary
2 The observational picture of AGN
2.1 From Welteninseln to AGN
2.2 Broad lines, narrow lines, and the big-blue bump
2.3 Jets and other outflows
2.4 X-Ray Observations: Probing the innermost regions
2.5 Up, up and away: from gamma-rays toward the TeV range
3 The Central Engine
3.1 The Black hole
3.1.1 Approaching a black hole
3.1.2 Evidence for black holes in AGN
3.1.3 Schwarzschild metric
3.1.4 Rotating black holes: the Kerr metric
3.2 Accretion
3.2.1 Accretion Basics: Bondi Accretion and the Eddington Limit
3.2.2 Accretion and viscous dissipaation in a Thin Disk
3.2.3 Accretion in Thick Disks
3.2.4 Advection dominated accretion flows
3.3 Absorption close to the black hole
3.3.1 The Torus model
3.3.2 Absorption in the disk
3.3.3 Disk winds
3.3.4 Alternative absorption models
3.4 Narrow and Broad line regions
3.5 Reverberation Mapping: Probing the Scale of the BLR
3.5.1 Photo-Ionization Modeling
3.6 AGN Jets: Emission, Dynamics and Morpologies
3.6.1 Raising the jet
3.6.2 Shocks and Knots
3.6.3 Superluminal Motion
4 AGN Types 9
4.1 Seyfert galaxies
4.1.1 Narrow Line Seyfert Galaxies
4.1.2 LINER
4.1.3 ULIGs
4.2 Radio Galaxies
4.3 Quasars
4.3.1 Radio Quiet Quasars
4.3.2 Radio Loud Quasars: FSRQs, BL LACs and Blazars
4.4 Unification of AGN
4.4.1 Radio loud versus radio quiet
4.4.2 Breaking the unification
5 AGN through the electromagnetic spectrum
5.1 Radio: resolving the central engine
5.2 Infrared: Dust Near And Far
5.3 Optical: where it all began
5.4 UV: The Obscured Inner Disk
5.5 X-rays: absorption, reflection, and Relativisticlly Alterd Line Progiles
5.6 Gamma-rays: The Blazar Dominatated Sky
5.7 VHE: the evolving domain
5.8 The whole picture: the spectral energy distribution
5.8.1 The synchrotron branch
5.8.2 The inverse Compton branch
5.8.3 Host galaxy contributions
5.8.4 The disk component
6 Environment
6.1 Host galaxies of AGN
6.2 The AGN starburst connection
6.3 AGNs in clusters of galaxies
7 Formation, evolution and the ultimate fate of AGN
7.1 The first AGN: How Did They Form?
7.2 AGN evolution
7.2.1 The Number-Flux Relation
7.2.2 The V/Vmax test
7.2.3 Luminosity Function
7.3 The late stages of an AGN?s life