Published in 1978, Physica Scripta, Vol. 17, 193


ACCRETION AND THE QUASAR PHENOMENON

Martin J. Rees


Institute of Astronomy, Cambridge, England


Abstract. Quasars are interpreted as massive black holes in galactic nuclei which are fuelled by capturing gas or stars from their surroundings. This paper discusses the supply of gas, the nature of the inflow (disclike or quasispherical) and the radiation processes.


Table of Contents

INTRODUCTION

WHAT SUPPLIES THE INFALLING GAS?
General Infall from the Galaxy
Stellar Disruption

MODES OF ACCRETION
Disc Accretion
Dissipative Quasi-Spherical Accretion

THE CONTINUUM RADIATION
Processes Involving Synchrotron-Type Emission from Relativistic Particles
Other Plasma-Type Processes

THE SIZES OF THE EMITTING REGIONS

THE EVOLUTIONARY CONTEXT: "DEAD" QUASARS

CONCLUSION

REFERENCES

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