This timely volume provides the first comprehensive review and synthesis of current understanding of magnetic fields in the Sun and similar stars. Magnetic activity results in a wealth of phenomena - including starspots, non-radiatively heated outer atmospheres, activity cycles, deceleration of rotation rates, and even, in close binaries, stellar cannibalism - all of which are covered clearly and authoritatively. This book brings together for the first time recent results in solar studies and stellar studies. The result is an illuminating new view of stellar magnetic activity. Key topics include radiative transfer, convective simulations, dynamo theory, outer-atmospheric heating, stellar winds and angular momentum loss. Researchers are provided with a state-of-the-art review of this exciting field, and the pedagogical style and introductory material make the book an ideal and welcome introduction for graduate students.

Review of the hardback:‘… a valuable summary of our understanding of solar physics and its offspring astrophysics … The book will be enjoyed by many.’

Source: Irish Astronomical Journal

Review of the hardback:‘… it is an extremely useful reference for researchers and graduate students working in this field … This is, I believe, a very timely book that will be read by both solar and stellar astronomers. As observations of the magnetic fields of other stars have improved, it has become apparent that the solar paradigm, is not always appropriate. A comprehensive review such as this will hopefully inform advances in the fields of both solar and stellar magnetic activity.’

Moira Jardine Source: The Observatory

Review of the hardback:‘The result is an illuminating and comprehensive view of stellar magnetic activity.’

Source: Europe & Astronomy

Review of the hardback:‘… a splendid book that reviews our current understanding of many key topics in solar and stellar activity … the strength of the book lies in the clear overview it provides of activity both on the Sun and on other stars, from an observer’s viewpoint … highly recommended.’

Eric R. Priest Source: Physics Today

Review of the hardback:‘Students must read it, professionals must use it for reference.’

Michael Stix Source: Solar Physics