Terahertz Astronomy, by Christopher K. Walker
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Terahertz Astronomy, by Christopher K. Walker
Best PDF Ebook Online Terahertz Astronomy, by Christopher K. Walker
A Powerful Window into Cosmic Evolution
Terahertz (THz) observations of interstellar atoms, molecules, and dust serve as powerful probes of the conditions within the interstellar medium that permeates our galaxy, providing insights into the origins of stars, planets, galaxies, and the Universe. Taking a cross-disciplinary approach to the subject, Terahertz Astronomy explores THz astrophysics and the technologies that make this rapidly evolving field possible.
The first four chapters of the book discuss the origin and interpretation of THz light in astrophysical sources. The remaining five chapters present an overview of the technologies used to collect and detect THz light. Every chapter contains worked-out examples and exercises. The author explains each topic as intuitively as possible and includes the equations needed for real-life astrophysical applications.
In just a few years, the number of active THz researchers has substantially grown due to increased interest in terrestrial remote sensing at THz frequencies. This book provides researchers with both the background science and technology to interpret THz observations and design, build, and deploy THz astronomical instrumentation.
Terahertz Astronomy, by Christopher K. Walker- Amazon Sales Rank: #926321 in Books
- Published on: 2015-10-16
- Original language: English
- Number of items: 1
- Dimensions: 10.10" h x 1.00" w x 7.10" l, .0 pounds
- Binding: Hardcover
- 351 pages
Review
"This comprehensive, well-written book was a pleasure to read, an absolute must for anyone interested in learning about cutting-edge technologies and techniques revolutionizing our modern view of the Universe, and it is destined to become a standard reference work for astronomers and technologists."―Professor Glenn White, The Open University
"This excellent book fills a huge hole in the literature in observational terahertz astronomy. No other existing text covers the essentials of terahertz astronomy instrumentation and techniques as applied to the study of the interstellar medium. It is sure to become an essential text for those who work in the field."―Christopher Groppi, School of Earth and Space Exploration, Arizona State University
"… a wonderful book, combining an insightful overview of the interstellar medium with a description of the most important techniques used to study this component of galaxies and how new stars form. It’s particularly timely, with the availability of powerful new tools, including the ALMA array, the SOFIA airborne observatory, and a range of planned and proposed suborbital and space missions in the terahertz range."―Paul F. Goldsmith, Jet Propulsion Laboratory, California Institute of Technology and Herschel Space Observatory
"This valuable and well-written textbook by Professor Christopher Walker helps to fill a gap in the literature describing the interstellar medium at terahertz frequencies. There are very few textbooks that discuss the medium from the observer’s point of view, showing how to determine its physical parameters from the output of the detectors. Also discussed are the operations of mixer and bolometer detectors."―Thomas G. Phillips, John D. MacArthur Professor of Physics Emeritus, California Institute of Technology
"… a fundamental source for astronomers and engineers who wish to understand the physical principles and detection techniques."―Jonathan Williams, University of Hawaii
"Walker’s book is incredibly timely: it introduces the basics of terahertz data but also explains the instrumentation at the level all observers need to know, and does so in friendly but, most importantly, crystal-clear prose."―George H. Rieke, Regents' Professor of Astronomy, University of Arizona
"… an essential resource for all astrophysicists and experimental physicists seeking to exploit the opportunities of this last frontier in astronomy."―Michael Burton, University of New South Wales
About the Author
Christopher K. Walker is a Professor of Astronomy and an Associate Professor of Optical Sciences and Electrical & Computer Engineering at the University of Arizona. He has over 30 years of experience designing, building, and using state-of-the-art receiver systems for THz astronomy. He is the author of numerous papers on star formation and protostellar evolution, a topical editor for IEEE Transactions on TeraHertz Science and Technology, and the principal investigator of the long-duration balloon project "The Stratospheric THz Observatory (STO)" funded by NASA.
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Most helpful customer reviews
2 of 3 people found the following review helpful. and space missions are giving astronomers much better access at terahertz frequencies By Paul Goldsmith The terahertz frequency range denotes the portion of the electromagnetic spectrum between microwaves and heat radiation. This has been an underdeveloped frequency range because of technological challenges. And, astronomy at these frequencies is hindered by the strong absorption by water vapor in the Earth's atmosphere. On the Earth's surface, signals travel only a maximum of a few km before being absorbed. But the situation is rapidly changing. New sources of radiation for measurements have been developed, and dramatic improvements in detector sensitivity have been achieved. And aircraft (SOFIA a 747 aircraft with 2.5m telescope), balloons, and space missions are giving astronomers much better access at terahertz frequencies. Professor Walker's book is thus exceedingly timely, and it is a really excellent overview of both technology and astronomy at terahertz frequencies. The writing is very clear and is pitched to an advanced undergraduate student or scientist or engineer without a lot of background in this area. It covers a lot of material starting with the basic physics, but taking the reader close to the state-of-the-art in terms of analyzing astronomical data or specifying systems for photometry or spectroscopy. It is just an enjoyable book to read, if for no other reason that it is wonderful to see how much progress has been made in the past 20 years or so. The "golden age" of terahertz astronomy may well just be beginning, and reading Terahertz Astronomy is a great way to get a view of where we've come, with pointers to where we will be going.
1 of 2 people found the following review helpful. the universe ism data and equations By astro good overall book on the big bang start up from the view of all the ISM data from satellites and the background microwave stuff and some equations that try to guess at what went on during the big bang and there after. how a cloud of particles can have gravity attraction is very interesting calculation.
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