Baryon acoustic oscillations
Baryon acoustic oscillations are periodic fluctuations in the density of visible matter caused by pressure waves in the early universe. They are imprinted in the large-scale distribution of galaxies.
Baryon acoustic oscillations are discussed in cosmology, astrophysics, and large-scale structure studies.
Status
Baryon acoustic oscillations are measured through galaxy surveys and used as a standard scale for constraining cosmological parameters. Ongoing observations refine their statistical precision and interpretation.