| Abstract : | The clustering of matter in the Universe is dependent upon the matter density parameter ($\Omega_m$) and the amplitude of initial density fluctuations ($\sigma_8$). Galaxies form at the peaks of the matter distribution, but are a biased tracer of this distribution, and so on their own cannot constrain the cosmological parameters of the Universe, especially $\sigma_8$. When combined with weak gravitational lensing, these degeneracies can be broken, and the combination is a potent probe of both the galaxy dark matter connection and cosmology. We use the clustering of galaxies from the Sloan Digital Sky Survey III , and the weak lensing signal around these galaxies measured with the first year data from the Subaru Hyper Suprime Cam survey. I will present constraints on the value of the parameters $\Omega_m$ and $\sigma_8$ and compare with other Stage III experiments designed to probe dark energy. |
