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Article Contents

ABSTRACT

1.INTRODUCTION

2.OBSERVATIONAL METHODS
2.1.Optical and far-infrared polarization
2.2.Synchrotron emission
2.3.Magnetic field components
2.4.Faraday rotation and Faraday depolarization
2.5.Zeeman effect
2.6.Field origin and amplification

3.MAGNETIC FIELDS IN THE MILKY WAY
3.1.Optical, far-infrared and sub-mm polarization
3.2.Radio continuum
3.3.Faraday Rotation of extra-galactic radio sources and pulsars
3.4.Zeeman effect
3.5.Modeling the magnetic field of the Milky Way

4.GALAXIES
4.1.Optical polarization, infrared polarization, and Zeeman effect
4.2.Magnetic field strengths
4.3.The radio - infrared correlation
4.4.Magnetic field structures in spiral galaxies
4.5.Magnetic fields in barred galaxies
4.6.Flocculent and irregular galaxies
4.7.Radio halos
4.8.Interacting galaxies
4.9.Galaxies with jets
4.10.Elliptical and dwarf spheroidal galaxies

5.OUTLOOK

APPENDIX
A.1.Catalogue of radio surveys of the Milky Way
A.2.Catalogue of radio polarization observations of nearby galaxies
A.3.Links to the SKA project and its precursor and pathfinder telescopes

REFERENCES