Using the acoustic peak to measure cosmological parameters

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].

4 pages, 1 figure, Explanations have been clarified

References in corpus (2)

• A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
• A Measurement of the Angular Power Spectrum of the CMB from l = 100 to 400

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• Decaying Dark Energy in Higher-Dimensional Gravity
• Quintessence with a constant equation of state in hyperbolic universes
• Quintessence and the Curvature of the Universe after WMAP
• The picture of our universe: A view from modern cosmology
• Cosmic Time Transformations in Cosmological Relativity