2007/02/22 by Alberto Vallinotto, Scott Dodelson, C. Schimd +3 · 1 citation
Physics and Astronomy · #Astronomy #Astrophysics #Baryon #Baryon acoustic oscillations #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Galaxy #Gravitational lens #Horizon #Physics #Position (finance) #Radio Astronomy Observations and Technology #Redshift #Weak gravitational lensing #astro-ph
paper · pdf · doi:10.1103/physrevd.75.103509
published as Phys.Rev.D75:103509,2007 · 10 pages, 4 figures
arxiv created 2007/02/22 · openalex publication_date 2007/05/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Baryon acoustic oscillations (BAO) have recently been observed in the distribution of distant galaxies. The height and location of the BAO peak are strong discriminators of cosmological parameters. Here we consider the ways in which weak gravitational lensing distorts the BAO signal. We find two effects that can affect the height of the BAO peak in the correlation function at the percent level but that do not significantly impact the position of the peak and the measurement of the sound horizon. BAO turn out to be robust cosmological standard rulers.