Secondary Anisotropies: Cosmology from Joint Analyses of CMB and Galaxy Surveys

Large scale structure leaves an imprint in the cosmic microwave background (CMB) in the form of secondary anisotropies.  As a result of these small distortions, CMB and galaxy surveys provide highly complementary cosmological probes.  I will illustrate how this complementarity can be exploited using cross-survey correlations between galaxy surveys and (i) CMB lensing and (ii) the Sunyaev-Zel’dovich effect.  Moreover, the complementarity of CMB and optical imaging surveys extends beyond cosmology, to include applications in planetary science, which I will briefly discuss.  With the next generation of CMB and galaxy surveys coming online soon, cross-survey analyses are poised to become increasingly powerful.

Speaker: Eric Baxter, Univ. of Pennsylvania