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Images: M. Blanton

Images: M. Blanton. Figures: M. Blanton & SDSS. Baryon Acoustic Oscillations (BAO). Eisenstein et al. 2005. Baryon Acoustic Oscillations. Eisenstein et al. 2005. BOSS. Baryon Acoustic Oscillations. Eisenstein et al. 2005. d r = (c/H) d z. d r = D A dq. Baryon Acoustic Oscillations.

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Images: M. Blanton

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  1. Images: M. Blanton

  2. Figures: M. Blanton & SDSS

  3. Baryon Acoustic Oscillations (BAO) Eisenstein et al. 2005

  4. Baryon Acoustic Oscillations Eisenstein et al. 2005

  5. BOSS Baryon Acoustic Oscillations Eisenstein et al. 2005

  6. dr = (c/H)dz dr = DAdq Baryon Acoustic Oscillations • BAO imprint a “standard ruler” scale on the clustering of matter. • Length (153.2 ± 1.7 Mpc) can be calculated given cosmological parameters measured by CMB anisotropies. • Measurable in distribution of galaxies or intergalactic gas. • Angular scale of oscillation peak yields DA(z). • Line-of-sight scale yields H(z). Observer Anderson et al. 2012 (BOSS)

  7. SDSS-III: M. Blanton Yellow = SDSS main Red = SDSS LRG White = BOSS gal. Cyan = BOSS QSO

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