搜索结果: 1-13 共查到“天文学 the Broad Line”相关记录13条 . 查询时间(0.077 秒)
Off-Axis Energy Variability of AGNs: a New Paradigm for Broad-Line- and Continuum-Emitting Regions
accretion, accretion disks—black hole physics—galaxies: active— galaxies: Seyfert — polarization — quasars: emission lines
2011/10/17
The general picture of how thermal AGNs work has become clearer in recent years but major observational puzzles threaten to undermine this picture. These puzzles include AGNs with extremely asymmetric...
The Demographics of Broad-Line Quasars in the Mass-Luminosity Plane. I. Testing FWHM-Based Virial Black Hole Masses
Demographics Broad-Line Quasars Mass-Luminosity Plane
2011/10/13
We jointly constrain the LF and BHMF of quasars using a Bayesian approach that describes the underlying active BHMF and Eddington ratio distribution to match the observed distributions in the quasar m...
Star formation in self-gravitating disks in active galactic nuclei. I. Metallicity gradients in broad line regions
Star formation self-gravitating disks active galactic Metallicity gradients
2011/10/11
It has been suggested that the high metallicity generally observed in active galactic nuclei (AGNs) and quasars originates from ongoing star formation in the self-gravitating part of accretion disks a...
Broad Line Radio Galaxies Observed with Fermi-LAT: The Origin of the GeV Gamma-Ray Emission
Broad Line Radio Galaxies Fermi-LAT:OriginGeV Gamma-Ray Emission
2011/10/10
We report on a detailed investigation of the gamma-ray emission from 18 broad line radio galaxies (BLRGs) based on two years of Fermi Large Area Telescope (LAT) data. We confirm the previously reporte...
The origin of the Broad Line Region in Active Galactic Nuclei
the Broad Line Active Galactic Nuclei
2011/1/13
Although broad emission lines are the most reliable signature of the nuclear activity of a galaxy and the location of the emitting material is well measured by the reverberation method, the physical ...
X-Ray Properties of Narrow-Line Seyfert 1 Galaxies with Very Small Broad-Line Widths
galaxies active— galaxies Seyfert — X-rays galaxies
2010/11/16
Narrow-line Seyfert 1 galaxies (NLS1s) with very small broad-line widths (say,FWHM(H ) . 1200 kms-1) represent the extreme type of Seyfert 1 galaxies that have small black hole masses (MBH) and/or hig...
Chandra high resolution spectroscopy of the circumnuclear matter in the Broad Line Radio Galaxy 3C445
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/29
We present evidence for X-ray line emitting and absorbing gas in the nucleus of the Broad-Line Radio Galaxy (BLRG), 3C 445. A 200ks Chandra LETG observation of 3C 445 reveals the presence of several h...
Temperature diagnostics of the Broad Line Region in Active Galactic Nuclei。
The Broad Line Region of Quasars。
The broad line region in active galactic nuclei。
THE BROAD LINE REGION OF AGN：KINEMATICS AND PHYSICS (Invited review)
Galaxies active-Galaxies nuclei-Atomic processes-Line profiles-Plasmas
2009/2/18
In this paper a discussion of kinematics and physics of the Broad
Line Region (BLR) is given. The possible physical conditions in the BLR and
problems in determination of the physical parameters (el...
THE BROAD LINE REGION OF AGN：KINEMATICS AND PHYSICS(Serb. Astron. J. } 173 (2006), 1)
BROAD LINE REGION KINEMATICS PHYSICS
2009/2/11
THE BROAD LINE REGION OF AGN: KINEMATICS AND PHYSICS(Serb. Astron. J. } 173 (2006), 1).
SIMULATIONS OF THE BROAD LINE REGION OF NGC 5548 WITH CLOUDY CODE：TEMPERATURE DETERMINATION
Galaxies active-Galaxies individual NGC 5548-Galaxies Seyfert-Line formation-Plasmas
2009/2/10
In this paper an analysis of the physical properties of the Broad
Line Region (BLR) of the active galaxy NGC 5548 is presented. Using the photoion-
ization code CLOUDY and the measurements of Peters...