Virilization of the Broad Line Region in Active Galactic Nuclei—connection between shifts and widths of broad emission lines

AbstractWe modeled the single-peaked Broad Emission Lines (BELs) with two-component model (accretion disk, with surrounding spherical region), comparing it with observational line profiles for a number of Active Galactic Nuclei (AGN). We find that the accretion in the Broad Line Region (BLR) can be present even if the profiles of BELs are single-peaked.

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Broad Emission Lines in Active Galactic Nuclei

International Astronomical Union Colloquium ◽

10.1017/s0252921100039713 ◽

1997 ◽

Vol 159 ◽

pp. 80-95 ◽

Cited By ~ 10

Author(s):

J. A. Baldwin

Keyword(s):

Active Galactic Nuclei ◽

Galactic Nuclei ◽

Emission Lines ◽

Broad Line ◽

Broad Line Region ◽

Broad Emission ◽

Line Region

AbstractThis paper assesses what we have learned about the structure of AGN broad-line region (BLR), with emphasis on the work other than reverberation studies in order to complement other recent reviews. Basic photoionization models are briefly described. Current models of the BLR and some of the observations that might distinguish among them are discussed.

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Spectral Variability in Seyfert Galaxies

Symposium - International Astronomical Union ◽

10.1017/s007418090015507x ◽

1987 ◽

Vol 121 ◽

pp. 161-167

Author(s):

B.M. Peterson

Keyword(s):

Active Galactic Nuclei ◽

Galactic Nuclei ◽

Seyfert Galaxies ◽

Broad Line ◽

Spectral Variability ◽

Broad Line Region ◽

Broad Emission ◽

Line Region ◽

Order Of Magnitude ◽

Optical Continuum

Recent observations of spectral variability in active galactic nuclei have established the connection between the broad emission-line and optical continuum flux changes. The inferred size of the broad-line region is at least an order of magnitude smaller than conventional estimates based on photoionization models, which leads to new conclusions about the nature of the broad-line region.

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CONSTRAINING UV CONTINUUM SLOPES OF ACTIVE GALACTIC NUCLEI WITH CLOUDY MODELS OF BROAD-LINE REGION EXTREME-ULTRAVIOLET EMISSION LINES

The Astrophysical Journal ◽

10.1088/0004-637x/793/2/100 ◽

2014 ◽

Vol 793 (2) ◽

pp. 100 ◽

Cited By ~ 7

Author(s):

Joshua Moloney ◽

J. Michael Shull

Keyword(s):

Active Galactic Nuclei ◽

Extreme Ultraviolet ◽

Galactic Nuclei ◽

Emission Lines ◽

Broad Line ◽

Ultraviolet Emission ◽

Broad Line Region ◽

Line Region

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Plasma Diagnostics in the Broad Line Region of Active Galactic Nuclei Using Emission Lines

Publications of the Astronomical Society of the Pacific ◽

10.1086/649506 ◽

2009 ◽

Vol 121 (886) ◽

pp. 1440-1441

Author(s):

Dragana Ilić

Keyword(s):

Active Galactic Nuclei ◽

Plasma Diagnostics ◽

Galactic Nuclei ◽

Emission Lines ◽

Broad Line ◽

Broad Line Region ◽

Line Region

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FeII, FeI Emission Lines from Accretion Disks: An Explanation for “FeII Problem” in AGNs?

Symposium - International Astronomical Union ◽

10.1017/s0074180900176442 ◽

1994 ◽

Vol 159 ◽

pp. 463-463

Author(s):

Chunyan Wei ◽

Fuzhen Cheng ◽

Junhan You

Keyword(s):

Active Galactic Nuclei ◽

Accretion Disk ◽

Accretion Disks ◽

Galactic Nuclei ◽

Emission Lines ◽

Broad Line ◽

Broad Line Region ◽

Line Region

For the solution of the puzzling “FeII problem” in active galactic nuclei(AGNs) (Netzer et al. 1983; Wills et al. 1985), we pay our attention to optical band and suggest: (1)the observed so-called “FeII emission lines” features may be blending of FeII multiples and FeI multiples. Our previous work(Wei et al. 1993) has showed that there are many FeI emission lines whose wavelength lie around the observed “FeII emission lines” features. In fact, FeI emission lines have been observed in the spectrum of PHL 1092(Bergeron et al. 1980; Cheng et al. 1993). (2)the emission lines from accretion disk must be considered besides the emission from broad line region.

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