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Paper: Probing Fundamental-Constant Evolution with Radio Spectroscopy
Volume: 395, Frontiers of Astrophysics: A Celebration of NRAO's 50th Anniversary
Page: 297
Authors: Kanekar, N.
Abstract: Spectroscopy in redshifted radio transitions allows a probe of changes in multiple fundamental constants such as the fine-structure constant α, the proton gyromagnetic ratio gp, and the electron-proton mass ratio μme/mp. In this article, I will describe the advantages and disadvantages of such radio techniques relative to optical ones, discuss the best present techniques and results, and, finally, summarize prospects for the future.
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