Annu. Rev. Astron. Astrophys. 1992. 30: 575-611 Copyright © 1992 by Annual Reviews. All rights reserved

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

KEY WORDS: cosmic rays, free-free emission, infrared radiation, star formation, synchrotron radiation

Table of Contents

• INTRODUCTION
• THE POPULATION OF NORMAL GALAXIES
• FREE-FREE EMISSION AND ABSORPTION
• Basic Equations
• Isolating the Thermal Emission
• Integrated Radio Spectra and Brightness Temperatures
• SYNCHROTRON RADIATION
• Basic Equations
• Magnetic Fields
• Cosmic-Ray Sources and Transport
• THE FIR/RADIO CORRELATION
• RADIO EMISSION AND STAR FORMATION
• Nonthermal Luminosity and the Supernova Rate
• A Simple Model for Radio Emission from Normal Galaxies
• SUMMARY
• REFERENCES