Dynamical Modeling of the C iv Broad Line Region of the z = 2.805 Multiply Imaged Quasar SDSS J2222+2745

  title={Dynamical Modeling of the C iv Broad Line Region of the z = 2.805 Multiply Imaged Quasar SDSS J2222+2745},
  author={Peter R. Williams and Tommaso Treu and H{\aa}kon Dahle and Stefano Valenti and Louis E. Abramson and Aaron J. Barth and Brendon J. Brewer and Karianne Dyrland and Michael D. Gladders and Keith D. Horne and Keren Sharon},
  journal={The Astrophysical Journal Letters},
We present the first ever models of a broad line region (BLR) at the peak of active galactic nucleus (AGN) activity using the multiply imaged z = 2.805 quasar SDSS J2222+2745. The modeled data consist of monthly spectra covering the broad C iv emission line over a 5.3 yr baseline. The models suggest a thick disk BLR that is inclined by ∼40° to the observer’s line of sight and with an emissivity weighted median radius of rmedian=33.0−2.1+2.4 light days. The kinematics are dominated by near… 
Spectroastrometry and Reverberation Mapping: The Mass and Geometric Distance of the Supermassive Black Hole in the Quasar 3C 273
The quasar 3C 273 has been observed with infrared spectroastrometry (SA) of the broad Paα line and optical reverberation mapping (RM) of the broad Hβ line. SA delivers information about the angular
The Broad Line Region and Black Hole Mass of NGC 4151
We present a reanalysis of reverberation mapping data from 2005 for the Seyfert galaxy NGC 4151, supplemented with additional data from the literature to constrain the continuum variations over a
Hα Reverberation Mapping of the Intermediate-mass Active Galactic Nucleus in NGC 4395
We present the results of a high-cadence spectroscopic and imaging monitoring campaign of the active galactic nucleus (AGN) of NGC 4395. High signal-to-noise-ratio spectra were obtained at the


The author of this thesis aimed at investigating the positive and negative effects of using social media through collecting the users' experiences and professionals' viewpoints, and identified other practical effects and aspects of social media.
The Iraf Data Reduction And Analysis System
  • D. Tody
  • Computer Science
    Astronomical Telescopes and Instrumentation
  • 1986
The IRAF system provides a good selection of programs for general image processing and graphics applications, plus a large selection ofprograms for the reduction and analysis of optical astronomy data.
  • 2019
Master’s Thesis, Univ. Oslo https://www.duo.uio.no/ handle/10852/69986?show=full
  • 2019
  • 1993
The Black Hole Mass of the z = 2.805 Multiply Imaged Quasar SDSS J2222+2745 from Velocity-resolved Time Lags of the C iv Emission Line
We present the first results of a 4.5 yr monitoring campaign of the three bright images of multiply imaged z = 2.805 quasar SDSS J2222+2745 using the Gemini North Multi-Object Spectrograph and the
Space Telescope and Optical Reverberation Mapping Project. XII. Broad-line Region Modeling of NGC 5548
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Correlations between the mass of a supermassive black hole (SMBH) and the properties of its host galaxy (e.g., total stellar mass M*, luminosity Lhost) suggest an evolutionary connection. A powerful
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The structure of the broad-line region (BLR) is an essential ingredient in the determination of active galactic nucleus (AGN) virial black hole masses, which in turn are important to study the role
SciPy 1.0: fundamental algorithms for scientific computing in Python
An overview of the capabilities and development practices of SciPy 1.0 is provided and some recent technical developments are highlighted.