Astroparticle Physics

VIIIPrefaceOn top of that, the basic ideas discussed in this book can be followed without referring tospecial mathematical derivations.I owe thanks to many people for their help during the writing of this book. Dr. ArminBöhrer read the manuscript with great care. Ms. Ute Bender and Ms. Angelika Wied wrotethe text, and Ms. Claudia Hauke prepared the figures that were finalized by Dipl.Phys. StefanArmbrust. I owe special thanks to Dr. Klaus Affholderbach and Dipl.Phys. Olaf Kraselwho created the computer layout of the whole book in the LATEX style. I am especially indebtedto Dipl.Phys. Tilo Stroh for his constant help, not only as far as physics questionsare concerned, but in particular for applying the final touch to the manuscript with his inimitable,masterful eye for finding the remaining flaws in the text and the figures. Finally, I owemany thanks to the Vieweg editors, Ms. Christine Haite and Dipl.Math. Wolfgang Schwarz.Geneva, July 2000