The spectrum of a single photoionized cloud

Gary J. Ferland

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arXiv · astro-ph/0307450

The spectrum of a single photoionized cloud

Gary J. Ferland

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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.

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Gary J. Ferland. 2003-07-25. The spectrum of a single photoionized cloud. https://arxiv.org/abs/astro-ph/0307450

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