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Using the acoustic peak to measure cosmological parameters

Neil J. Cornish
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Abstract

Recent measurements of the cosmic microwave background radiation by the Boomerang experiment indicate that the universe is spatially flat. Here some simple back-of-the-envelope calculations are used to explain their result. The main result is a simple formula for the angular scale of the acoustic peak in terms of the standard cosmological parameters: l=193*[1+3(1-Omega_0)/5+(1-h)/5+Omega_Lambda/35].

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Neil J. Cornish. 2000-07-27. Using the acoustic peak to measure cosmological parameters. https://doi.org/10.1103/physrevd.63.027302

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