Weak Lensing of Baryon Acoustic Oscillations

Abstract

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.

10 pages, 4 figures

References in corpus (5)

• Dynamics of dark energy
• The acceleration of the universe and the physics behind it
• Simulations of Baryon Oscillations
• Systematic effects in the sound horizon scale measurements
• Investigating lensing by absorbers in the 2dF-Quasar survey

Cited by in corpus (7)

• Baryon acoustic signature in the clustering of density maxima
• Size Bias in Galaxy Surveys
• Complete Treatment of Galaxy Two-Point Statistics: Gravitational Lensing Effects and Redshift-Space Distortions
• Lensing Corrections to Features in the Angular Two-Point Correlation Function and Power Spectrum
• Weak Lensing Effects on the Galaxy Three-Point Correlation Function
• Universal Weak Lensing Distortion of Cosmological Correlation Functions
• Weak lensing deflection of three-point correlation functions