In "Coevolution of Black Holes and Galaxies", from the Carnegie Observatories Centennial Symposia. Published by Cambridge University Press, as part of the Carnegie Observatories Astrophysics Series. Edited by L. C. Ho, 2004, p. 325.
astro-ph/0304150

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Abstract. This article reviews and discusses (1) the discovery and early work on the evolution of quasars and AGNs, (2) the different techniques used to find quasars and their suitability for evolutionary studies, (3) the current status of our knowledge of AGN evolution for 0 < z < 6, (4) the new results and questions that deep radio and X-ray surveys are producing for the subject, (5) the relation of AGNs to the massive black holes being found in local galaxies and what they tell us about both galaxy and AGN evolution, and (6) current research problems and future directions in quasar and AGN evolution.

Table of Contents

INTRODUCTION AND BACKGROUND

OBSERVATIONAL TECHNIQUES, SELECTION EFFECTS, AND SURVEYS

Techniques for Finding Quasars and AGNs

EVOLUTION OF THE AGN POPULATION

Results through 1995

Recent Large Optical Surveys

Spectral Evolution

Evolution of Radio Sources

ESTIMATING BLACK HOLE MASSES

THEORETICAL CONSIDERATIONS: HOW THE MASSES GROW

CURRENT RESEARCH PROGRAMS

Optical/Infrared Surveys

Evolution of X-ray Sources

NEXT STEPS

REFERENCES