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Cosmic Messengers: The Limits of Astronomy in an Unruly Universe

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Martin Harwit, author of the influential book Cosmic Discovery, asks key questions about the scope of observational astronomy. Humans have long sought to understand the world we inhabit. Recent realization of how our unruly Universe distorts information before it ever reaches us reveals distinct limits on how well we will ultimately understand the Cosmos. Even the best instruments we might conceive will inevitably be thwarted by ever more complex distortions and will never untangle the data completely. Observational astronomy, and the cost of pursuing it, will then have reached an inherent end. Only some totally different lines of approach, as yet unknown and potentially far more costly, might then need to emerge if we wish to learn more. This accessible book is written for all astronomers, astrophysicists, and those curious about how well we will ever understand the Universe and the potential costs of pushing those limits.

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  • Provides a means to assess critical factors that affect our understanding of the Universe, and how this depends on the availability of the requisite tools and their cost
  • Explores the limits of improved tools in the face of unruly distortions of data; perfect observations will not help us if the information carried by cosmic messengers is flawed or incomplete
  • Points to a cost-benefit analysis of pushing the limits of astronomy, in light of other societal priorities
Συγγραφέας: Harwit Martin
Εκδότης: CAMBRIDGE UNIVERSITY PRESS
Σελίδες: 396
ISBN: 9781108842440
Εξώφυλλο: Σκληρό Εξώφυλλο
Αριθμός Έκδοσης: 1
Έτος έκδοσης: 2021

Preface
Part I. Instruments, Messengers, and Cosmic Messages:
1. Instruments, Messengers, Astrophysics and Cosmochemistry
2. Primordial Messengers and their Interpretation
Part II. The Bounded Energies of Nature's Messengers:
3. Cosmic Ray Particles, Photons, and Leptons
4. Gravitational Waves
5. Gravitational Lensing
Part III. Parameters Specifying Individual Messengers:
6. The Ranges of Messenger Parameters
Part IV The Pace of Progress
7. An Era of Surveys
8. The Accumulation of Discoverable Phenomena
9. The Human Aspect of the Cosmic Search
Appendix: Symbols, Glossary, Units and their Ranges
Index.

Martin Harwit is Professor Emeritus of Astronomy at Cornell University, New York. For many years he also served as Director of the National Air and Space Museum in Washington, DC. For much of his astrophysical career he built instruments and made pioneering observations in infrared astronomy. His advanced textbook, Astrophysical Concepts (1973), has taught several generations of astronomers through its four editions. Harwit has had an abiding interest in questions first raised in Cosmic Discovery on how science advances or is constrained by factors beyond the control of scientists. His subsequent book, In Search of the True Universe (Cambridge, 2014), explores how philosophical outlook, historical precedents, industrial progress, economic factors, and national priorities have affected our understanding of the cosmos. This new book rounds out his informal trilogy on the themes of cosmic discovery. Harwit is a recipient of the Astronomical Society of the Pacific's highest honor, the Bruce Medal, which commends 'his original ideas, scholarship, and thoughtful advocacy'.

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