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Open Astronomy

formerly Baltic Astronomy

Editor-in-Chief: Barbuy, Beatriz

IMPACT FACTOR 2017 (Baltic Astronomy): 0.417
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Volume 20, Issue 3


High Redshift Quasars, Emission Lines and ‘Cloudy’

Gary J. Ferland
Published Online: 2017-03-23 | DOI: https://doi.org/10.1515/astro-2017-0307


I describe some of the outstanding “big picture” questions in quasar research and how the development of the plasma simulation code Cloudy is being guided to answer them. QSO spectra are complex and challenge even the most sophisticated spectral codes. Particular emphasis is given to a central question - how do the properties of the central black hole and the accretion disk are manifested in the observed spectrum.

Keywords: galaxies; active; AGN; quasars quasars; emission lines


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About the article

Received: 2011-08-08

Accepted: 2011-08-15

Published Online: 2017-03-23

Published in Print: 2011-09-01

Citation Information: Open Astronomy, Volume 20, Issue 3, Pages 379–385, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2017-0307.

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© 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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