Weak lensing of baryon acoustic oscillations

作者：Vallinotto Alberto^*; Dodelson Scott; Schimd Carlo; Uzanx Jean Philippe

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2007, 75(10): 103509.

DOI：10.1103/PhysRevD.75.103509

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.

• 出版日期2007-5
• 单位中国地震局