Continuum radiation from active galactic nuclei

The Astronomy and Astrophysics Review

Volumn 2, Issue 2, 1990, Pages 125-166

  Bregman, Joel N ^a  

^a UNIVERSITY OF MICHIGAN   (United States)

Author keywords

BL Lacertae objects; galaxies: nuclei of galaxies: Seyfert; galaxies: radio; quasars: general

Indexed keywords

EID: 0000500649     PISSN: 09354956     EISSN: 14320754     Source Type: Journal    
DOI: 10.1007/BF00872765     Document Type: Article

References (330)

1. X-ray intensity and spectral variations in the BL Lac sources H2155-304 and PKS0548-322
2. 8-13 m spectrophotometry of galaxies - IV. Six more Seyferts and 3C 345
3. Spectra and linear polarizations of extragalactic variable sources at centimeter wavelengths
4. The short-term radio variability of BL Lacertae objects
5. The radio variability of BL Lacertae objects
6. The Lyman edge test of the quasar emission mechanism
7. Spectropolarimetry and the nature of NGC 1068
8. Two new blazar redshifts
9. EXOSAT observations of a strong soft X-ray excess in MKN 841
10. The near-infrared properties of galactic nuclei
11. Serendipitous discovery of an AGN showing rapid X-ray variability
12. Is every quasar beamed?
13. Hot dust and the near-infrared bump in the continuum spectra of quasars and active galactic nuclei
14. Detection of strong carbon monoxide emission from the host galaxy of the quasar I ZW 1
15. X-ray spectra of PG quasars. II - The X-ray-ultraviolet excess of PG 1211 + 143
16. Extremely red compact radio sources - The empty field objects
17. The acceleration of cosmic rays in shock fronts - I
18. Upper limits from hard X-ray observations of five BL Lacertae objects
19. The evolution of the compact radio source in 3C 345. I - VLBI observations
20. Relativistic jets as compact radio sources
21. Particle acceleration by astrophysical shocks
22. Diffusive shock acceleration and quasar photospheres
23. Multifrequency observations of the BL Lacertae object 0735+178
24. Multifrequency observations of the superluminal quasar 3C 345
25. Multifrequency observation of the optically violent variable quasar 3C 446
26. Extragalactic Radio Jets
27. Coordinated multisite observations of the variability of BL Lac
28. Far-infrared observations of a luminous dust-shrouded source in the nucleus of NGC 4945
29. Multifrequency observations of blazars. III - The spectral shape of the radio to X-ray continuum
30. Reddenings derived from H I and galaxy counts - Accuracy and maps
31. Kinematic constraints on models of the BL Lacertea object OJ 287 from VLBI polarization observations
32. Polarization of thermal radiation from accretion disks in dwarf novae
33. Hot dust on the outskirts of the broad-line region in Fairall 9
34. Millimeter and submillimeter observations of 3C 273
35. A mid- to far-infrared variability study of the intermediate Seyfert galaxy, MK 6
36. Blue-light monitoring of 3C 273, 3C 351, 3C 454.3, 3C 66A, PKS 2141+17, OJ 287, and ZW 0039.5+004
37. Constraints on quasar accretion disks from the optical/ultraviolet/soft X-ray big bump
38. H0323 + 022 - A puzzling high-latitude X-ray/optical/radio source
39. Temperature fluctuations and infrared emission from interstellar grains
40. The X-ray properties of two galaxies with high far-infrared luminosities - ARP 220 and Markarian 231
41. Spectral energy distributions of active galactic nuclei between 0.1 and 100 microns
42. Far-infrared variability in active galactic nuclei
43. Broad-band properties of the CfA Seyfert Galaxies. II - Infrared to millimeter properties
44. 1 millimeter continuum observations of extragalactic objects
45. On the Variability of the Compact Nonthermal Sources
46. X-ray spectra of PG quasars. I - The continuum from X-rays to infrared
47. The diversity of soft X-ray spectra in quasars
48. Quenchings and outbursts of extragalactic radio sources - Nine years of 3.3-mm measurements and comparisons with centimeter-wave variations
49. Daily observations of compact extragalactic radio sources at 2695 and 8085 MHz, 1979-1985
50. H 0323 + 022 - A new BL Lacertae object with extremely rapid variability
51. Flux density measurements of variable radio sources at 8.96 mm (33.5 GHz)
52. The milliarcsecond polarization structure of six BL Lacertae objects
53. Superluminal motion in the BL Lacertae object OJ 287
54. Multifrequency observations of blazars. I - The shape of the 1 micron to 2 millimeter continuum
55. Multifrequency observations of blazars. II - The variability of the 1 micron to 2 MM continuum
56. X-ray and ultraviolet observations of Markarian 421
57. Spectral properties of blazars. I - Objects observed in the far-ultraviolet. II - an X-ray observed sample
58. Bulk acceleration in relativistic jets and the spectral properties of blazars
59. Rapid X-ray and optical variability in the X-ray selected BL Lacertae object IE 1402.3 + 0416
60. X-ray and optical observations of X-ray-selected BL Laceratae objects
61. Multifrequency observations of the flaring quasar 1156+295
62. Spectropolarimetry and variability of Seyfert 1.8 and 1.9 galaxies
63. Spectropolarimetry of the unusual high-polarization quasar OI 287
64. 4U1722 + 11: the discovery of an X-ray selected BL Lac object
65. High-resolution emission-line imaging of Seyfert galaxies. I - Observations. II - Evidence for anisotropic ionizing radiation
66. Particle acceleration in extragalactic sources: the role of synchrotron losses in determining the spectrum
67. Rapid variability of extragalactic radio sources
68. Submillimeter photometry of extragalactic objects
69. Synchrotron emission from shocked relativistic jets. I - The theory of radio-wavelength variability and its relation to superluminal motion
70. Synchrotron Emission from Shocked Relativistic Jets. II. A Model for the Centimeter Wave Band Quiescent and Burst Emission from BL Lacertae
71. What is the difference between radio-loud and radio-quiet quasi-stellar objects?
72. Application of a relativistic jet model to the study of BL Lacertae objects
73. An infrared study of quasars
74. Energy distributions of blazars
75. Rapid radio variations in the flux density of BL Lacertae
76. Dust in the nuclei of the Seyfert galaxies Markarian 231 and NGC 4151
77. Physics of Compact Nonthermal Sources. Theory of Radiation Processes
78. Compact Radio Sources
79. VLA observations of objects in the Palomar Bright Quasar Survey
80. CCD monitoring of quasars and BL Lacertae objects
81. Relativistic jets as X-ray and gamma-ray sources
82. An X-ray heated wind in NGC 1068
83. Molecular tori in Seyfert galaxies - Feeding the monster and hiding it
84. Active extragalactic sources - Nearly simultaneous observations from 20 centimeters to 1400 A
85. Massive thin accretion discs - I. Calculated spectra
86. Massive thin accretion discs - II. Polarization
87. Classification of active galaxies and the prospect of a unified phenomenology
88. High-luminosity IRAS galaxies - I. The proportion of IRAS galaxies in interacting systems
89. Semidynamical models of radio jets - Relativistic beaming and source counts
90. Optical monitoring of radio sources
91. He II lambda 1640/lambda 4686 and Ly-alpha/H-beta ratios in the extraordinary Seyfert galaxy Markarian 359
92. The X-ray spectra of the extragalactic sources in the Einstein extended medium sensitivity survey
93. Simultaneous multifrequency observations of the BL Lacertae object Markarian 421
94. X-ray outburst of the quasar 3C 279
95. The ultraviolet excess of luminous quasars. II - Evidence for massive accretion disks
96. The ultraviolet excess of Seyfert 1 galaxies and quasars
97. Spectral Properties of Blazars. II. an X-Ray Observed Sample
98. Relativistic jets and the continuum emission in QSOs
99. Models for high-frequency radio outbursts in extragalactic sources, with application to the early 1983 millimeter-to-infrared flare of 3C 273
100. The polarization of Seyfert galaxies
101. A near-infrared and optical study of X-ray selected Seyfert galaxies. II - Models and interpretation
102. Weak bump quasars
103. Polarimetric observations of the quasar 3C 345
104. The radiative deceleration of ultrarelativistic jets in active galactic nuclei
105. The Structure of Extended Extragalactic Radio Sources
106. A 25 micron component in 3C 390.3
107. IRAS observations of Seyfert galaxies
108. Evidence for a highly polarized continuum in the nucleus of NGC 1068
109. Light variations in 3C 273
110. X-ray variability of the BL Lacertae object PKS 2155 - 304 in the 0.1-6 keV range
111. The noise of BL Lacertae
112. The HISS of BL Lacertae
113. The class of highly polarized quasars - Observations and description
114. A comparison of the properties of highly polarized QSOs versus low-polarization QSOs
115. The X-ray spectrum and time variability of narrow emission line galaxies
116. Quasar discs - I. The Baldwin effect
117. Quasar discs - II. A composite model for the broad-line region
118. Optical and infrared spectrophotometry of 18 Markarian galaxies
119. Absolute spectral energy distribution of quasi-stellar objects from 0.3 to 10 microns
120. IRAS observations of radio-quiet and radio-loud quasars
121. The near-infrared variability of a sample of optically selected quasars
122. The radio emission from far-infrared galaxies: Seyfert or starburst?
123. Norris, R.P., Kesteven, M.J., Allen, D.A., Troupe, E.: 1988, Monthly Notices Roy. Astron. Soc.234, 51P
124. The ultraviolet continuum of quasars - I. The shape of the continuum, continuum reddening and intervening absorption
125. The ultraviolet continuum of quasars - II. Continuum variability
126. Radio variability of the blazar AO 0235 + 164
127. Relativistic beaming and quasar statistics
128. Emission-Line Regions of Active Galaxies and QSOs
129. Infrared Radiation from the Seyfert Galaxy NGC 1068
130. Broadband Optical and Infrared Observations of Seyfert Galaxies
131. Soft X-ray spectral observations of quasars and high X-ray luminosity Seyfert galaxies
132. Spectrophotometric monitoring of high luminosity active galactic nuceli - I. The methods and data
133. Search for correlated radio and optical events in long-term studies of extragalactic sources
134. A recent outburst of AO 0235 + 164
135. A extended ionizing radiation cone from the nucleus of the Seyfert 2 galaxy NGC 1068
136. Pounds, K.A., Turner, T.J., Warwick, R.S.: 1986, Monthly Notices Roy. Astron. Soc.221, 7P
137. The cluster environments of powerful radio galaxies
138. Black Hole Models for Active Galactic Nuclei
139. The infrared emission of Seyfert galaxies
140. Hard X-ray observations of ultraluminous infrared galaxies
141. 10 to the 12th solar luminosity starbursts and shocked molecular hydrogen in the colliding galaxies ARP 220 (= IC 4553) and NGC 6240
142. A possibly new type of QSO identified through infrared measurements
143. The nature of the nuclear sources in M82 and NGC 253
144. Abrupt cutoffs in the optical-infrared spectra of nonthermal sources
145. Linear polarization structure of the BL Lacertae object OJ 287 at milliarcsecond resolution
146. 8-13 m spectrophotometry of galaxies - II. 10 Seyferts and 3C 273
147. 2-165 keV observations of active galaxies and the diffuse background
148. Alignment of radio and optical polarization with VLBI structure
149. Continuum energy distribution of quasars - Shapes and origins
150. Ultraluminous infrared galaxies and the origin of quasars
151. Warm ultraluminous galaxies in the IRAS survey - The transition from galaxy to quasar?
152. Extended broad-line emission in the obscured Seyfert 1 Nucleus of NGC 4388
153. Small-aperture infrared photometry of Seyfert 1 galactic nuclei
154. Observation of soft X-ray spectra from a Seyfert 1 and a narrow emission-line galaxy
155. The nature of the infrared luminous galaxies Arp 220 and NGC 6240
156. The optical and near-infrared polarization properties of the OVV quasar 3C 345
157. Evidence for accretion disks in highly polarized quasars
158. The remarkable infrared galaxy ARP 220 = IC 4553
159. The IRAS View of the Extragalactic Sky
160. The effect of the Lyman-alpha forest on the ultraviolet continua of very high redshift quasars
161. Optical and radio properties of X-ray selected BL Lacertae objects
162. The optical polarization properties of 'normal' quasars
163. Fitting improved accretion disk models to the multiwavelength continua of quasars and active galactic nuclei
164. Multifrequency observations of the Blazar PKS 0537-441 in a moderately active state
165. Enhanced Star Formation and Infrared Emission in the Centers of Galaxies
166. Galaxies and far-infrared emission
167. Optical polarization of Seyfert galaxies
168. Disk-Accretion onto a Black Hole. II. Evolution of the Hole
169. Simultaneous X-ray, ultraviolet, and optical observations of the BL Lacertae object PKS 2155-304
170. Variability of the soft excess in the Seyfert I galaxy Mkn 335
171. The EXOSAT spectral survey of AGN
172. Radio structures of Seyfert galaxies. VI - VLA observations of a nearby sample
173. The extended narrow-line region in radio Seyferts: evidence for a collimated nuclear UV field?
174. Eight years of ultraviolet spectra of the variable BL Lacertae object PKS 2155-304
175. PKS 2155-304 - Relativistically beamed synchrotron radiation from a BL Lacertae object
176. A double grid of accretion disc model spectra for cataclysmic variable stars
177. The radio morphology of blazars and relationships to optical polarization and to normal radio galaxies
178. Toward explaining Seyfert galaxies
179. Quasar energy distributions. I - Soft X-ray spectra of quasars
180. Broad emission features in QSOs and active galactic nuclei. II - New observations and theory of Fe II and H I emission
181. High-Resolution Emission-Line Imaging of Seyfert Galaxies. II. Evidence for Anisotropic Ionizing Radiation
182. Luminosity dependence in the ratio of X-ray to infrared emission of QSOs
183. Observations of three BL Lacertae objects - Constraints on inhomogeneous relativistically beamed jet models