Back to the article index

Article Contents

TITLE PAGE

Introduction

I.ORIGINS OF SWING AMPLIFICATION

1.1.Cambridge union

1.2.Swing amplification

1.3.Spiral regeneration, take two

1.4.Transient growth and asymptotic stability

1.5.Spiral stellar wakes

1.6.The roads part

II.THE LIN-SHU THEORY GOES ON

2.1.Neutral modes and marginally stable disk

2.2.Antispiral theorem

2.3.Spiral shock waves and induced star formation

2.4.Extremely satisfactory comparisons?

III.SHARPER FOCUS

3.1.A feel of group velocity

3.2.Group properties of tightly wrapped packets

3.3.Sources of spiral waves