An Introduction to Active Galactic Nuclei

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Cambridge University Press, Feb 13, 1997 - Science - 238 pages
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At least one galaxy in every hundred has a core so bright it outshines the ten thousand million stars that make up rest of the galaxy. The study of these 'active galactic nuclei' (AGN) is one of the most dynamic areas of contemporary astronomy, involving one fifth of all research astronomers. This textbook provides a clear, comprehensive and self-contained introduction to AGN for advanced undergraduates and graduate students in astronomy and physics. It presents 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 Universe. It serves as an entry point to the research literature and an invaluable reference for researchers in the field.
  

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Contents

Basic Properties and a Brief Historical Perspective
1
12 Radio Surveys and Quasars
5
13 Properties of Quasars
8
131 Radio Properties of Quasars
10
132 Variability
13
133 Ultraviolet Fluxes
14
135 Quasar Redshifts
16
14 RadioQuiet Quasars
18
742 RadioLoud Objects
121
743 Grand Unification and the Relationship Between RadioQuiet and RadioLoud AGNs
123
The Environment of AGNs
126
812 SurfaceBrightness Profiles and Luminosities
128
813 Relationships Between AGNs and Their Hosts
129
82 Nearby Companions
133
83 Galaxy Mergers and Starbursts
134
The Geometry of the Expanding Universe
135

Taxonomy of Active Galactic Nuclei
21
22 Quasars
23
23 Radio Galaxies
24
25 BL Lac Objects and Optically Violent Variables
27
26 NarrowLine XRay Galaxies
28
273 Zwicky Galaxies and N Galaxies
29
The BlackHole Paradigm
32
32 Fueling Quasars
34
33 AccretionDisk Structure
36
34 Alternatives to Black Holes
38
Continuum Emission
40
41 UltravioletOptical Continuum
43
42 HighEnergy Spectra
49
43 Infrared Continuum
56
44 Radio Continuum
57
441 Compact Radio Sources
58
442 Superluminal Motion
59
45 Blazar Spectra
63
The BroadLine Region
67
52 Basic Parameters
70
53 Photoionization of the BLR
75
54 BroadLine Profiles
78
542 Line Asymmetries and Wavelength Shifts
81
55 Reverberation Mapping
82
56 The BLR Velocity Field
87
57 Cloud Properties
88
58 LineContinuum Correlations
90
582 The Baldwin Effect
91
The NarrowLine Region
93
62 Physical Conditions in LowDensity Gases
95
622 Electron Temperatures
99
63 Basic Parameters
101
64 NarrowLine Profiles
103
65 Morphology of the NarrowLine Region
106
Unified Models of AGNs
110
71 Unification Ideas and Principles
111
72 Evidence for Unification in Seyferts
112
73 Statistical Tests for Unification
118
74 Results of Unification Studies
120
911 The Cosmological Redshift
137
912 The Expansion Parameter
139
913 Distance Measures
140
92 The FriedmannLemaitre Equations
141
93 Time Dependence of Cosmological Parameters
145
94 Transformations Between Reference Frames
152
942 Geometrical Effects
154
Quasar Surveys
157
101 Basic Principles of QSO Surveys
159
1012 Problems with FluxLimited Samples
161
1013 The Eddington Bias
162
1014 Survey Selection Functions
164
1021 KCorrections
165
1022 ColorInduced Biases
167
1023 ColorSelected QSOs
169
103 Slitless Spectroscopy
171
104 Other Selection Methods
173
105 The Surface Density of QSOs
174
The Quasar Luminosity Function and Evolution
175
1112 Results of the Log N Log S Test
178
1113 The LuminosityVolume Test
179
1114 Results of the LuminosityVolume Test
182
112 The QSO Luminosity Function
183
113 QSO Evolution
186
1132 Evolution of the AGN Population
189
Quasar Absorption Lines
194
121 AbsorptionLine Physics
195
122 Basic Characteristics
200
123 Broad AbsorptionLine QSOs
204
124 AbsorptionLine Statistics
206
1242 Characteristics of the Absorbers
209
125 Galaxies as Absorbers
210
126 The Intergalactic Medium
212
1262 Ionization of the Intergalactic Medium
214
References
217
Bibliography
229
Index
232
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