Process / pipelineCosmological probe
Baryon Acoustic Oscillations
Baryon Acoustic Oscillations are imprints of sound waves in the early universe that appear as a characteristic scale in the large-scale distribution of galaxies today. First predicted theoretically by Piet Peebles and Joseph Yu in 1970, and detected observationally by the Sloan Digital Sky Survey in 2005, BAO provides a standard ruler for measuring cosmic distances and constraining the expansion history of the universe.
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Sources
- Peebles, P. J. E., & Yu, J. T. (1970). Primeval adiabatic perturbation in an expanding universe. Astrophysical Journal, 162, 815-836. DOI: 10.1086/150713 ↗
- Eisenstein, D. J., et al. (2005). Detection of the baryon acoustic peak in the correlation function of SDSS luminous red galaxies. Astrophysical Journal, 633(2), 560-574. DOI: 10.1086/466512 ↗
- Ross, A. J., et al. (2015). The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey. Monthly Notices of the Royal Astronomical Society, 449(1), 835-847. DOI: 10.1093/mnras/stv154 ↗