Titlebook: Surveying the Skies; How Astronomers Map Gareth Wynn-Williams Book 2016 Springer International Publishing Switzerland 2016 Electromagnetic

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The Cosmic Microwave Background,matter, via the carbon monoxide spectral lines (section 5.7) and emission from warm dust grains (section 6.7). But by far its most important contribution to astronomy has been the study of the Cosmic Microwave Background radiation (CMB), a topic that earns its own chapter in this book. An additional

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Gamma Ray Surveys,at a photon energy of 100 keV, while a helpful physics distinction is that atomic processes—i.e. interactions between electrons and nuclei—usually produce X-rays, while purely nuclear reactions usually produce gamma rays. The wavelength range of gamma rays observed by astronomers is extremely wide (

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The CCD Era,ace. It is now time to enter the fifth era of astronomy, in which visible light has once again become a cornerstone of progress. and ground-based telescopes are once again taking the lead in conducting astronomy surveys. A key to this resurgence has been the development of the charged coupled device

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The Telescope Era,ly, this was the era in which we recognized that the stars were objects of interest in their own right, and started measuring their spectra, their distances, and their motions with respect to each other.

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Radio Surveys,arth’s atmosphere, most of the other new disciplines had to wait for the space age, which started in the 1960s. In this chapter we will discuss radioastronomy: the other wavebands will be covered in Chapters 6 to 10.

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Infrared Surveys,of the spectrum. His follow-up experiments showed that the heating effect was caused by radiation that could be reflected, refracted, and absorbed in a similar way to light. He called this radiation Calorific Waves; the word infrared came later.