This course-tested textbook conveys the fundamentals of magnetic fields and relativistic plasma
in diffuse cosmic media with a primary focus on phenomena that have been observed at different
wavelengths. Theoretical concepts are addressed wherever necessary with derivations presented
in sufficient detail to be generally accessible.In the first few chapters the authors present
an introduction to various astrophysical phenomena related to cosmic magnetism with scales
ranging from molecular clouds in star-forming regions and supernova remnants in the Milky Way
to clusters of galaxies. Later chapters address the role of magnetic fields in the evolution of
the interstellar medium galaxies and galaxy clusters.The book is intended for advanced
undergraduate and postgraduate students in astronomy and physics and will serve as an entry
point for those starting their first research projects in the field.
