Published in "Astrophysical Jets", eds. D. Burgarella, M. Livio and C. P. O'Dea, 1993

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THE M87 JET

J. A. Biretta


Space Telescope Science Institute
3700 San Martin Drive, Baltimore, MD 21218, USA


Abstract. We review the current observational status of the M87 jet at radio, optical, and X-ray frequencies. Special attention is paid to the radio morphology, the radio-to-X-ray spectrum, measurement of proper motions, and optical evidence for a counter-jet. The problem of jet confinement is discussed, as well as models for the radio-to-X-ray spectrum and the related problem of particle lifetimes. Finally a kinematic model is sketched wherein the first kpc of the jet is relativistic, followed by shocks and subrelativistic flow.


Table of Contents

INTRODUCTION

OBSERVATIONS AND SOME IMPLICATIONS
Radio Structure of the Jet
The Radio-to-X-Ray Spectrum of the Jet
Proper Motions in the Jet
Evidence for the Presence of a Counter-Jet

MODELS AND PROBLEMS
Confinement of the Jet
Models for the Radio-to-X-Ray Spectrum and the Particle Lifetime Problem
A Model for the Jet Kinematics

SUMMARY AND FUTURE WORK

REFERENCES

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