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

For a PDF version of the paper, click here.


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