Quasar Structure and Cosmological Feedback

Details Quasar Structure and Cosmological Feedback Quasar Structure and Cosmological Feedback

2006-06-05

arxiv.org/abs/astro-ph/0606100v1

Astronomy and Astrophysics

Astrophysics

8 pages, 3 figures (1 color, 575K). To appear in the Proceedings of the Workshop on "AGN and Galaxy Evolution", Specola Vatica

Scientific paper

Feedback from quasars and AGNs is being invoked frequently in several cosmological settings. Currently, order of magnitude, or more, uncertainties in the structure of both the wind and the 'obscuring torus' make predictions highly uncertain. To make testable models of this 'cosmological feedback' it is essential to understand the detailed structure of AGNs sufficiently well to predict their properties for the whole quasar population, at all redshifts. Progress in both areas is rapid, and I describe the near-term prospects for reducing these uncertainties for 'slow' (non-relativistic) AGN winds and the obscuring torus.

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