1. BAO Damping and Reconstruction Cheng Zhao 2015.04.16

2. Baryon Acoustic Oscillations (BAO) Density fluctuation + pressure → sound wave Standard Ruler (100 Mpc/h) Daniel Eiensenteinhttps://www.sdss3.org/surveys/boss.php

3. BAO Damping Advancing scale of nonlinear gravitational collapse: Bulk flow Supercluster formation Halo formation (subdominant) Redshift space distortion (RSD) Kaiser effect Finger of God (FoG) Physical Interpretation Hamilton 1998de Lapparent V. et al, 1986

4. BAO Damping Linear @ z = 49 Simulation @ z = 0 2-point correlation function Power spectra Eisenstein et al., 2007

5. BAO Damping Modeling of Power Spectrum

6. BAO Damping Modeling of Power Spectrum

7. BAO Damping Prada et al., 2014

8. BAO Damping

9. Open symbols: dispersion of dark matter pair separation at BAO scales.

10. BAO Reconstruction Linear Theory

11. BAO Reconstruction Linear Theory Linear @ z = 49 Simulation @ z = 0 Eisenstein et al., 2007 20Mpc/h filter / Without FoG comp. 10Mpc/h filter / With FoG comp.

12. BAO Reconstruction Zel’dovich Approximation