Published in "Astrophysical Jets", eds. D. Burgarella,
M. Livio and C. P. O'Dea, 1993
RADIO OBSERVATIONS OF JETS: LARGE SCALES
R. A. Laing
Royal Greenwich
Observatory
Madingley Road, Cambridge CB3 0EZ, United Kingdom
Abstract. The systematics of kiloparsec-scale jets in
extragalactic radio sources are
outlined, emphasizing the uncertainties in their physical
properties. The hypothesis
that their side-to-side asymmetries result from Doppler boosting is
discussed in some detail.
Table of Contents
INTRODUCTION
- SYSTEMATICS
- Ingredients
- The Two Jet Flavors
- Types of Radio Sources
- Propagation of Jets and the Types of Radio Source
- DIAGNOSTICS OF PHYSICAL CONDITIONS
- Density
- Density Contrast
- Limits on Bulk Flow Velocities from Brightness and
Separation Ratios
- Average Hot-Spot Advance Speeds from Spectral
Measurements
- Energy Density and Pressure
- Magnetic Field Strength
- Thrust and Energy Balance
- Warning
- SIDEDNESS AND RELATIVISTIC FLOWS ON LARGE
SCALES
- Background
- Depolarization Asymmetry in FRII Sources
- Are All Strong-Flavor Jets Relativistic?
- SUMMARY
- What are the Ingredients?
- FRI Sources
- FRII Sources
- Concluding Remarks
- REFERENCES
