Constraining gravity at large scales with the 2MASS Photometric Redshift catalogue and Planck lensing

Understand

We present a new measurement of structure growth at $z \simeq 0.08$ obtained by correlating the cosmic microwave background (CMB) lensing potential map from the \textit{Planck} satellite with the angular distribution of the 2MASS Photometric Redshift galaxies.

• After testing for, and finding no evidence for systematic effects, we calculate the angular auto- and cross-power spectra.
• We combine these spectra to estimate the amplitude of structure growth using the bias-independent $D_G$ estimator introduced by Giannantonio et al.
• 2016.