David Fegan 
CHERENKOV REFLECTIONS [EPUB ebook] 
Gamma-Ray Imaging and the Evolution of TeV Astronomy

’This book is recommended to those interested in knowing how Te V astronomy began, evolved, and remains a growth area.The author has captured the difficulties of being a pioneer, amply demonstrating the need to keep the faith and work the problem until you succeed. Cherenkov telescopes are now in operation around the world, and at the dawn of the CTA era Te V astronomy has a lot of evolving still to do.’
The Observatory
This book documents how Te V gamma-ray astronomy painstakingly emerged from 20th century traditional cosmic-ray physics to become a keystone feature of contemporary high-energy astrophysics, fundamental to our understanding of high-energy cosmic processes and interactions. Contemporary Te V observations are based on the Imaging Atmospheric Cherenkov Technique and in excess of two hundred individual galactic and extra-galactic gamma-ray sources have now been discovered and studied in detail.The book tells the story from the perspective of the Whipple Observatory collaboration, pioneers of the imaging technique. At the same time, parallel developments by the broader community are constantly referenced, discussed and evaluated, mainly in the Te V energy regime but also where relevant at Pe V energies. The narrative traces the contributions of many important participants active in the field since the mid-1950s and critically evaluates and provides commentary on the progress of research until the first sources were established beyond doubt, during the late 1980s and early 1990s. The final chapter presents a short summary of the contemporary status of Te V gamma-ray astronomy.Written predominantly from a historical perspective, the author guides readers through many decades of instrumental development and evolution, using only minimal mathematical background. This book will appeal to astrophysicists, particle physicists, traditional optical and radio astronomers, as well as others working across a variety of related cognate disciplines. It should be of interest and value to graduate students involved with contemporary fourth-generation Te V research programs such as CTA (Cherenkov Telescope Array).