The physics and evolution of active galactic nuclei:
"Research into active galactic nuclei (AGN) - the compact, luminous hearts of many galaxies - is at the forefront of modern astrophysics. Understanding these objects requires extensive knowledge in many different areas: accretion disks, the physics of dust and ionized gas, astronomical spectros...
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Cambridge [u.a.]
Cambridge Univ. Press
2013
|
| Ausgabe: | 1. publ. |
| Schlagworte: | |
| Online-Zugang: | Cover Inhaltsverzeichnis |
| Zusammenfassung: | "Research into active galactic nuclei (AGN) - the compact, luminous hearts of many galaxies - is at the forefront of modern astrophysics. Understanding these objects requires extensive knowledge in many different areas: accretion disks, the physics of dust and ionized gas, astronomical spectroscopy, star formation, and the cosmological evolution of galaxies and black holes. This new text by Hagai Netzer, a renowned astronomer and leader in the field, provides a comprehensive introduction to the theory underpinning our study of AGN and the ways that we observe them. It emphasizes the basic physics underlying AGN, the different types of active galaxies and their various components, and the complex interplay between them and other astronomical objects. Recent developments regarding the evolutionary connections between active galaxies and star-forming galaxies are explained in detail. Both graduate students and researchers will benefit from Netzer's authoritative contributions to this exciting field of research"-- |
| Beschreibung: | Includes bibliographical references and index |
| Beschreibung: | XIV, 353 S. Ill., graph. Darst. |
| ISBN: | 9781107021518 |
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| 245 | 1 | 0 | |a The physics and evolution of active galactic nuclei |c Hagai Netzer |
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| 264 | 1 | |a Cambridge [u.a.] |b Cambridge Univ. Press |c 2013 | |
| 300 | |a XIV, 353 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 500 | |a Includes bibliographical references and index | ||
| 520 | 1 | |a "Research into active galactic nuclei (AGN) - the compact, luminous hearts of many galaxies - is at the forefront of modern astrophysics. Understanding these objects requires extensive knowledge in many different areas: accretion disks, the physics of dust and ionized gas, astronomical spectroscopy, star formation, and the cosmological evolution of galaxies and black holes. This new text by Hagai Netzer, a renowned astronomer and leader in the field, provides a comprehensive introduction to the theory underpinning our study of AGN and the ways that we observe them. It emphasizes the basic physics underlying AGN, the different types of active galaxies and their various components, and the complex interplay between them and other astronomical objects. Recent developments regarding the evolutionary connections between active galaxies and star-forming galaxies are explained in detail. Both graduate students and researchers will benefit from Netzer's authoritative contributions to this exciting field of research"-- | |
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Datensatz im Suchindex
| _version_ | 1804151360522813440 |
|---|---|
| adam_text | Titel: The physics and evolution of active galactic nuclei
Autor: Netzer, Hagai
Jahr: 2013
Contents
Preface page xiii
1 Observations of active galactic nuclei 1
1.1 AGNs across the electromagnetic spectrum 3
1.1.1 Optical-UV observations of AGNs 3
1.1.2 Infrared-submillimeter observations of AGNs 7
1.1.3 X-ray observations of AGNs 8
1.1.4 Radio observations of AGNs 10
1.1.5 Gamma-ray observations of AGNs 11
1.2 AGN variability 12
1.3 Discovering AGNs 13
1.3.1 Discovery by optical-UV properties 14
1.3.2 Discovery by radio properties 15
1.3.3 Discovery by X-ray properties 16
1.3.4 Discovery by IR properties 17
1.3.5 Discovery by continuum variability 17
1.4 AGN samples and census 18
1.5 AGN terminology 20
1.6 Useful cosmological relationships 20
1.7 Further reading 22
2 Nonthermal radiation processes 23
2.1 Basic radiative transfer 23
2.2 Synchrotron radiation 24
2.2.1 Emission by a single electron in a magnetic field 24
2.2.2 Synchrotron emission by a power-law distribution of
electrons 25
2.2.3 Synchrotron self-absorption 26
2.2.4 Polarization 27
2.2.5 Synchrotron sources in AGNs 27
vn
viii Contents
2.3 Compton scattering 27
2.3.1 Comptonization 28
2.3.2 The Compton parameter 30
2.3.3 Inverse Compton emission 30
2.3.4 Synchrotron self-Compton 31
2.4 Annihilation and pair production 31
2.5 Bremsstrahlung (free-free) radiation 33
2.6 Further reading 34
3 Black holes 35
3.1 Active and dormant black holes in galactic nuclei 35
3.2 General black hole properties 36
3.3 Accretion onto black holes 39
3.3.1 The Eddington luminosity 39
3.3.2 Spherical accretion 41
3.4 Further reading 42
4 Accretion disks 43
4.1 Optically thick, geometrically thin accretion disks 44
4.1.1 Basic disk parameters 44
4.1.2 Luminosity emissivity and temperature 47
4.1.3 Viscosity 49
4.1.4 Important time scales 52
4.1.5 Disk geometry 53
4.1.6 The emitted spectrum 55
4.1.7 Viewing angle dependences 57
4.2 Real AGN disks 58
4.2.1 Comptonization and the disk corona 58
4.2.2 Irradiated disks 61
4.3 Slim and thick accretion disks 62
4.4 Radiatively inefficient accretion flows 64
4.5 Further reading 68
5 Physical processes in AGN gas and dust 70
5.1 Photoionized gas 70
5.2 Basic spectroscopy 75
5.2.1 Absorption and emission coefficients 75
5.2.2 Atomic transitions and selection rules 77
5.2.3 Energy-level diagrams 79
5.3 Thermal balance 84
5.4 The spectrum of ionized AGN gas 89
5.4.1 Ionization parameter 89
Contents ix
5.4.2 Line and continuum emission processes 90
5.4.3 The hydrogen line spectrum 93
5.5 Gas composition 93
5.6 Clouds and confinement 95
5.7 Photoionization models 99
5.7.1 Photoionization models for a single cloud 99
5.7.2 Photoionization models for a system of clouds 99
5.8 Mechanical heating and collisionally ionized plasma 102
5.9 The motion of ionized gas 104
5.9.1 The equation of motion 104
5.9.2 Radiation pressure and gas outflows 105
5.10 Dust and reddening 108
5.10.1 General dust properties 108
5.10.2 Dust and ionized gas 112
5.10.3 Extinction curves 114
5.11 Further reading 115
6 The AGN family 116
6.1 How to classify AGNs 116
6.1.1 General and historical classification schemes 116
6.1.2 Diagnostic diagrams lì 8
6.2 Type-I and type-II AGNs 120
6.2.1 Central obscuration 120
6.2.2 Spectropolarimetry and scattered AGN radiation 122
6.2.3 X-ray observations and central obscuration 124
6.2.4 Ionization cones 125
6.2.5 Real type-II AGNs 126
6.3 Radio-loud and gamma-ray-loud AGNs 127
6.3.1 Radio-loud AGNs 127
6.3.2 Gamma-ray-loud AGNs 130
6.4 LinelessAGNs 132
6.5 Low-luminosity AGNs and LINERs 134
6.5.1 Spectral classification of LINERs 134
6.5.2 Accretion-driven LINERs and imposters 135
6.5.3 The infrared properties of LINERs 136
6.6 Broad-absorption-line AGNs 137
6.7 AGN unification 138
6.8 Further reading 141
7 Main components of AGNs 142
7.1 The broad-line region 142
7.1.1 The broad-line spectrum 143
Contents
7.1.2 Gas metallicity in the BLR 149
7.1.3 Broad-emission-line profiles 151
7.1.4 Eigenvector 1 154
7.1.5 Bolometric corrections 157
7.1.6 Emission-line variability and reverberation mapping 158
7.1.7 The transfer function 159
7.1.8 Reverberation mapping results 163
7.1.9 What determines the BLR size? 167
7.1.10 Black hole mass determination 168
7.1.11 Line and continuum correlations 174
7.1.12 BLR models 177
7.2 The narrow-line region 178
7.2.1 The NLR spectrum 180
7.2.2 The kinematics of the NLR gas 188
7.2.3 Luminosity covering factor and accretion rate 188
7.2.4 The NLR size and extended narrow-line regions 194
7.3 The highly ionized gas 195
7.3.1 HIG spectrum and outflow 195
7.3.2 Associated UV absorbers 200
7.4 Broad- and narrow-absorption-line regions 200
7.4.1 Broad absorption lines (BALs) 200
7.4.2 Narrow absorption lines 205
7.5 The central torus 205
7.5.1 Obscuring structure in the inner 100 pc 205
7.5.2 Dusty torus models 206
7.5.3 The inner torus and the HIG connection 209
7.5.4 The origin of the torus 212
7.5.5 AGNs without a torus? 212
7.6 The megamaser molecular disk 213
7.7 Stars and starburst regions 216
7.7.1 Stars as emission-line clouds 216
7.7.2 Starburst regions in AGNs 217
7.8 The central accretion disk 219
7.8.1 The optical-UV continuum of accretion disks 220
7.8.2 The polarized signature of AGN disks 221
7.8.3 The X-ray signature of AGN disks 223
7.8.4 Analogy with black holes in X-ray binary systems 229
7.8.5 Direct detection and size measurements via
microlensing 231
7.9 The central jet 231
7.9.1 Radio optical X-ray and gamma-ray jets 231
7.9.2 The electromagnetic signature of relativistic jets 233
Contents xi
7.10 Multicomponent AGN models 236
7.11 Further reading 239
Host galaxies of AGNs 242
8.1 Observations of host galaxies 242
8.2 Galaxy interaction and AGN activity 244
8.3 Stellar mass and black hole mass 245
8.3.1 BH mass in nonactive galaxies 245
8.3.2 BH mass and emission-line width 252
8.4 Red and blue galaxies 254
8.5 Star-forming galaxies 257
8.5.1 Observed properties of SF galaxies 257
8.5.2 Highlights of SF theory 259
8.5.3 Estimating star formation rates 261
8.5.4 Various types of SF galaxies 269
8.5.5 The star formation sequence 270
8.5.6 The various modes of star formation 271
8.5.7 The star formation history of the universe 272
8.6 The AGN-starburst connection 274
8.7 A combined AGN-galaxy SED 279
8.8 Further reading 280
Formation and evolution of AGNs 282
9.1 The redshift sequence of AGNs 282
9.2 Highlights of galaxy evolution 282
9.2.1 Hierarchical structure formation 282
9.2.2 Formation and evolution of galaxies 284
9.2.3 Numerical and semianalytic models of galaxy
formation and evolution 290
9.2.4 The role of supermassive BHs in galaxy evolution 291
9.3 Seed BHs 291
9.4 Feeding the monster 293
9.4.1 Angular momentum disk instability and secular
evolution 293
9.4.2 Merger-driven BH accretion 295
9.4.3 Nuclear star clusters 295
9.5 The growth of supermassive BHs 296
9.5.1 General considerations 296
9.5.2 Merging galaxies 298
9.5.3 Binary BHs 300
9.5.4 Various accretion modes of active black holes 303
9.5.5 The fundamental plane and the kinetic power of AGN
outflows 305
xii Contents
9.6 Mass and luminosity evolution of individual AGNs 307
9.7 Mass and luminosity evolution of the AGN population 309
9.7.1 The luminosity function of AGNs 309
9.7.2 The cosmological X-ray background 313
9.7.3 The total BH mass in the universe 315
9.7.4 The mass function of BHs 317
9.8 Coevolution of galaxies and supermassive BHs 320
9.8.1 BH evolutionary models 320
9.8.2 The relative growth rate of BH and stellar mass 321
9.8.3 Outflows and feedback 323
9.9 Further reading 328
10 Outstanding questions 330
10.1 Questions related to the central power house 330
10.1.1 Black hole mass and spin 330
10.1.2 Accretion disk 331
10.1.3 Radiatively inefficient flows and the nature of
LINERs 332
10.1.4 The central radio and gamma-ray source 332
10.2 Questions related to the broad and narrow emission lines 332
10.2.1 BLR physics and size 332
10.2.2 Gas kinematics in the BLR 333
10.2.3 The narrow- and coronal-line regions 333
10.2.4 Gas metallicity 334
10.3 Questions related to outflow and feedback 334
10.3.1 Outflow physics 334
10.3.2 The physics of feedback 335
10.4 Questions related to AGN evolution 335
10.4.1 BH growth 335
10.4.2 Duty cycle luminosity function and mass function 335
10.4.3 Merger or secular evolution and completely obscured
AGNs 336
10.4.4 M-a* at high redshift 336
10.4.5 The AGN-starburst connection 337
References 339
Index 349
Color plates following page 178
|
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| spelling | Netzer, Hagai 1945- Verfasser (DE-588)172283477 aut The physics and evolution of active galactic nuclei Hagai Netzer 1. publ. Cambridge [u.a.] Cambridge Univ. Press 2013 XIV, 353 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Includes bibliographical references and index "Research into active galactic nuclei (AGN) - the compact, luminous hearts of many galaxies - is at the forefront of modern astrophysics. Understanding these objects requires extensive knowledge in many different areas: accretion disks, the physics of dust and ionized gas, astronomical spectroscopy, star formation, and the cosmological evolution of galaxies and black holes. This new text by Hagai Netzer, a renowned astronomer and leader in the field, provides a comprehensive introduction to the theory underpinning our study of AGN and the ways that we observe them. It emphasizes the basic physics underlying AGN, the different types of active galaxies and their various components, and the complex interplay between them and other astronomical objects. Recent developments regarding the evolutionary connections between active galaxies and star-forming galaxies are explained in detail. Both graduate students and researchers will benefit from Netzer's authoritative contributions to this exciting field of research"-- Aktiver galaktischer Kern (DE-588)4233554-1 gnd rswk-swf Aktiver galaktischer Kern (DE-588)4233554-1 s DE-604 http://assets.cambridge.org/97811070/21518/cover/9781107021518.jpg Cover HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026743456&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
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| subject_GND | (DE-588)4233554-1 |
| title | The physics and evolution of active galactic nuclei |
| title_auth | The physics and evolution of active galactic nuclei |
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| title_full | The physics and evolution of active galactic nuclei Hagai Netzer |
| title_fullStr | The physics and evolution of active galactic nuclei Hagai Netzer |
| title_full_unstemmed | The physics and evolution of active galactic nuclei Hagai Netzer |
| title_short | The physics and evolution of active galactic nuclei |
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