The spectrum of a single photoionized cloud
Astrophysics
2007-05-23 v1
Abstract
The emission-line spectrum of a quasar is most likely emitted by an ensemble of photoionized clouds moving with a variety of velocities, with a range of densities and distances from the central object. The state of the art in this field is to first compute the emission from a single cloud, and then prescribe a mix of clouds to reproduce line intensities, profiles, and reverberation lags. Here I review the parameters that de-fine emission from a single cloud and the outstanding problems in qua-sar emission-line analysis.
Cite
@article{arxiv.astro-ph/0307450,
title = {The spectrum of a single photoionized cloud},
author = {Gary J. Ferland},
journal= {arXiv preprint arXiv:astro-ph/0307450},
year = {2007}
}
Comments
review from Quasars & Cosmology, ASP 162, Ferland & Baldwin, editors