scholarly journals The broad emission-line region in AGNs and quasars: The impact of variability studies

1996 ◽  
Vol 237 (1-2) ◽  
pp. 207-240 ◽  
Author(s):  
P. M. Gondhalekar ◽  
M. R. Goad ◽  
P. T. O'Brien
Keyword(s):  
Emission Line ◽  
Broad Emission ◽  
Line Region ◽  
Broad Emission Line ◽  
The Impact

scholarly journals Near infrared hydrogen emission line ratios as diagnostics of the broad emission line region

2012 ◽  
Vol 372 ◽  
pp. 012069
Author(s):  
Andrea J Ruff ◽  
David J E Floyd ◽  
Kirk T Korista ◽  
Rachel L Webster ◽  
Ryan L Porter ◽  
...  
Keyword(s):  
Emission Line ◽  
Near Infrared ◽  
Hydrogen Emission ◽  
Broad Emission ◽  
Line Region ◽  
Broad Emission Line ◽  
Hydrogen Emission Line

scholarly journals Velocity Diagnostics of the Broad Emission-Line Region of Active Galactic Nuclei

1997 ◽  
Vol 159 ◽  
pp. 175-178 ◽  
Author(s):  
Brian Espey
Keyword(s):  
Emission Line ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Nuclear Region ◽  
Driving Mechanisms ◽  
Broad Emission ◽  
Line Region ◽  
Broad Emission Line ◽  
Ongoing Project

AbstractWe present a brief review of emission-line velocity differences, and describe an ongoing project to determine the driving mechanisms responsible. We conclude with a brief outline of the use of velocity differences as probes of the conditions in the nuclear region of AGNs.

scholarly journals Constraining the geometry and kinematics of the quasar broad emission line region using gravitational microlensing

2019 ◽  
Vol 629 ◽  
pp. A43 ◽  
Author(s):  
D. Hutsemékers ◽  
L. Braibant ◽  
D. Sluse ◽  
R. Goosmann
Keyword(s):  
Emission Line ◽  
Line Profile ◽  
Polar Wind ◽  
Disk Model ◽  
Continuum Source ◽  
Broad Emission ◽  
Gravitational Microlensing ◽  
Line Region ◽  
Broad Emission Line ◽  
Single Epoch

The quadruply lensed quasar HE0435−1223 shows a clear microlensing effect that affects differently the blue and red wings of the Hα line profile in its image D. To interpret these observations, and constrain the broad emission line region (BLR) properties, the effect of gravitational microlensing on quasar broad emission line profiles and their underlying continuum has been simulated considering representative BLR models and microlensing magnification maps. The amplification and distortion of the Hα line profile, characterized by a set of four indices, can be reproduced by the simulations. Although the constraints on the BLR models set by the observed single-epoch microlensing signal are not very robust, we found that flattened geometries (Keplerian disk and equatorial wind) can more easily reproduce the observed line profile deformations than a biconical polar wind. With an additional independent constraint on the size of the continuum source, the Keplerian disk model of the Hα BLR is slightly favored.

scholarly journals DETECTION OF THE INTERMEDIATE-WIDTH EMISSION LINE REGION IN QUASAR OI 287 WITH THE BROAD EMISSION LINE REGION OBSCURED BY THE DUSTY TORUS

2015 ◽  
Vol 812 (2) ◽  
pp. 99 ◽  
Author(s):  
Zhenzhen Li ◽  
Hongyan Zhou ◽  
Lei Hao ◽  
Huiyuan Wang ◽  
Tuo Ji ◽  
...  
Keyword(s):  
Emission Line ◽  
Broad Emission ◽  
Line Region ◽  
Broad Emission Line ◽  
Dusty Torus

scholarly journals NEW CONSTRAINTS ON THE QUASAR BROAD EMISSION LINE REGION

2012 ◽  
Vol 754 (1) ◽  
pp. 18 ◽  
Author(s):  
Andrea J. Ruff ◽  
David J. E. Floyd ◽  
Rachel L. Webster ◽  
Kirk T. Korista ◽  
Hermine Landt
Keyword(s):  
Emission Line ◽  
Broad Emission ◽  
Line Region ◽  
Broad Emission Line

scholarly journals Dynamics of Broad Emission‐Line Region in NGC 5548: Hydromagnetic Wind Model versus Observations

1997 ◽  
Vol 479 (1) ◽  
pp. 200-221 ◽  
Author(s):  
Mark Bottorff ◽  
Kirk T. Korista ◽  
Isaac Shlosman ◽  
Roger D. Blandford
Keyword(s):  
Emission Line ◽  
Wind Model ◽  
Broad Emission ◽  
Line Region ◽  
Broad Emission Line ◽  
Ngc 5548 ◽  
Model Versus

scholarly journals Kinematics of the Broad Emission Line Region in NGC 5548

1996 ◽  
Vol 463 ◽  
pp. 144 ◽  
Author(s):  
Christine Done ◽  
Julian H. Krolik
Keyword(s):  
Emission Line ◽  
Broad Emission ◽  
Line Region ◽  
Broad Emission Line ◽  
Ngc 5548
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