Cosmological constraints from the redshift dependence of the Alcock-Paczynski effect: Dynamical dark energy

Understand

We perform an anisotropic clustering analysis of 1,133,326 galaxies from the Sloan Digital Sky Survey (SDSS-III) Baryon Oscillation Spectroscopic Survey (BOSS) Data Release (DR) 12 covering the redshift range $0.15<z<0.69$.

• The geometrical distortions of the galaxy positions, caused by incorrect cosmological model assumptions, are captured in the anisotropic two-point correlation function on scales 6 -- 40 $h^{-1}\rm Mpc$.
• The redshift evolution of this anisotropic clustering is used to place constraints on the cosmological parameters.
• We improve the methodology of Li et al.