Solar and Stellar Dynamos

Saas-Fee Advanced Course 39 Swiss Society for Astrophysics and Astronomy

  • Paul Charbonneau
  • Oskar Steiner

Part of the Saas-Fee Advanced Courses book series (SAASFEE, volume 39)

Table of contents

  1. Front Matter
    Pages i-xv
  2. Paul Charbonneau
    Pages 1-35
  3. Paul Charbonneau
    Pages 37-86
  4. Paul Charbonneau
    Pages 87-151
  5. Paul Charbonneau
    Pages 153-185
  6. Paul Charbonneau
    Pages 187-214
  7. Back Matter
    Pages 215-237

About this book


Astrophysical dynamos are at the heart of cosmic magnetic fields of a wide range of scales, from planets and stars to entire galaxies. This book presents a thorough, step-by-step introduction to solar and stellar dynamos. Looking first at the ultimate origin of cosmic seed magnetic fields, the antagonists of field amplification are next considered: resistive decay, flux expulsion, and flows ruled out by anti-dynamo theorems. Two kinematic flows that can act as dynamos are then studied: the Roberts cell and the CP-flow. Mean-field electrodynamics and derivation of the mean-field dynamo equations lead to the alpha Omega-dynamo, the flux transport dynamo, and dynamos based on the Babcock-Leighton mechanism. Alternatives to the mean-field theory are also presented, as are global MHD dynamo simulations. Fluctuations and grand minima in the solar cycle are discussed in terms of dynamo modulations through stochastic forcing and nonlinear effects. The book concludes with an overview of the major challenges in understanding stellar magnetic fields and their evolution in terms of various dynamo models, global MHD simulations, and fossil fields. Each chapter is accompanied by an annotated bibliography, guiding the readers to the relevant technical literature, which may lead them to carry out their own research in the field of dynamo theory.


Astronomical Constants Introductions to Stellar Magnetic Fields MHD Lectures Magnetic Fields of Compact Stars Saas-Fee Advanced Course 39 Solar Dynamo Models Solar Magnetic Cycle Stellar Dynamo Model Vector Identities and Theorems

Authors and affiliations

  • Paul Charbonneau
    • 1
  1. 1., Département de physiqueUniversité de MontréalMontrealCanada

Editors and affiliations

  • Oskar Steiner
    • 1
  1. 1.Kiepenheuer-Institut für SonnenphysikFreiburgGermany

Bibliographic information