"A splendid resource for students and researchers wanting a physics-based overview of the extraordinary findings of X-ray, gamma-ray, and cosmic-ray astronomy. The key properties of accreting black holes, gamma-ray bursts, pulsars, magnetars, galaxy clusters, and the many other fantastic denizens of the high-energy universe are highlighted, along with the tools and methods used to investigate them."--Niel Brandt, Pennsylvania State University"The introductory graduate literature available in high-energy astrophysics has not kept up with the field's explosion in breadth and impact. This ambitious and badly needed text ably surveys the field, covering an impressive range of topics while still providing good physical insight. The many illustrations, references for further study, and discussions of modern topics like theoretical computer simulations should make this book attractive to students and professors alike."--Paolo Coppi, Yale University"This is a very carefully constructed book and one that has been needed in our field for many years. Melia writes clearly, and the topics include most of the major ones that should be covered. Indeed, this is a book I would likely use in my high-energy astrophysics course here at Harvard."--Jonathan E. Grindlay, Harvard UniversityMelia, Fulvio is the author of 'High-Energy Astrophysics', published 2009 under ISBN 9780691135434 and ISBN 0691135436.