Annu. Rev. Astron. Astrophys. 1980. 18: 321-361 Copyright © 1980 by Annual Reviews. All rights reserved

Reprinted with kind permission from Annual Reviews, 4139 El Camino Way, Palo Alto, California, USA

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Table of Contents

• INTRODUCTION
• STRONGLY POLARIZED OBJECTS
• PROPERTIES OF BLAZARS
• ACTIVE OBJECTS WITH LOW POLARIZATION
• THEORETICAL MODELS AND THE ORIGIN OF POLARIZATION
• RELATIVISTIC JETS AND OPTICAL POLARIZATION
• CONCLUSIONS
• REFERENCES