Netzer, H., 1987. Quasar discs. II -- a composite model for the broad-line region. Mon. Not. R. Astron. Soc. 225, 55-72.Netzer, H., Quasar disk--II. A composite model for the broad-line region, Mon. Not. R. Astron. Soc., 225, 55-72, 1987....
We present evidence that the high-velocity CIV lambda 1549 emission line gas of radio-loud quasars may originate in a disk-like configuration, in close proximity to the accretion disk often assumed to emit the low-ionization lines. For a sample of 36 radio-loud z~2 quasars we find the ...
(2012). Microlensing of the broad line region in 17 lensed quasars. Astron. Astrophys. 544:A62. doi: 10.1051/0004-6361/201219125Sluse, D., Hutseme´kers, D., Courbin, F., Meylan, G. & Wambsganss, J. Microlensing of the broad line region in 17 lensed quasars. Astron. ...
Lens or Binary? Chandra Observations of the Wide Separation Broad Absorption Line Quasar Pair UM425 热度: Toappearin“TheNuclearRegion,HostGalaxyandEnvironmentofActiveGalaxies(2007)”RevMexAA(SC) THEBROADLINEREGIONOFQUASARS PaolaMarziani1, 1,JackW.Sulentic2, ...
The inferred upper limit to the size of the broad emission line region is smaller than 3 lt-yr, probably as small as 0.4 lt-yr for 0026 + 129, if the line-emitting region is spherically distributed. Such a small size implies a very high density of ionizing photons, of the order of ...
We discuss the relevance of our findings for the 'X-ray broad-line region' in other Seyferts, and for the origins of the optical broad-line region itself. 展开 关键词: accretion, accretion discs galaxies: active galaxies: individual: 1H0707-495 quasars: emission lines X-rays: galaxies DOI...
cesses in Broad Line Region (BLR) of Active Galactic Nuclei (AGNs). At larger ion- ization parameters recombination is more important, but at the higher temperatures the collisional excitation also becomes important, as well as in the case of lowionization pa- ...
Long-term observations of broad-line region (BLR) in the Seyfert 1 galaxy NGC 5548 are analyzed and compared with the predictions of the hydromagnetically driven outflow model of Emmering, Blandford and Shlosman Here we use the model to compute the delay between the C IV line and the ...
The direct detection of a density gradient within the inner arcsecond of the narrow-line region confirms expectations from previous observations of linewidth-critical density correlations in several LINERs.doi:10.1086/318268Barth, A. J.Ho, L. C....
Long-term monitoring of the broad-line region properties in a selected sample of AGN 来自 arXiv.org 喜欢 0 阅读量: 28 作者: D Ilic,AI Shapovalova,LC Popovic,V Chavushyan,AN Burenkov,W Kollatschny,A Kovacevic,S Marceta-Mandic,N Rakic,G La Mura 展开 摘要: We present the ...