APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Mathew Madhavacheril (Stoneybrook)
Title: Dark energy science from CMB lensing and cross-correlations
Date (JST): Thu, Apr 14, 2016, 13:30 - 14:30
Place: Seminar Room A
Abstract: The cosmic microwave background provides a backlight that is lensed by intervening matter during its journey from the surface of last scattering. This lensing signature is a rich source of information on a variety of science ranging from neutrino masses to cosmic acceleration, and is an important systematic for ongoing and future CMB experiments that hope to detect primordial gravitational waves. I will review the progress being made and the potential that CMB lensing offers in constraining theories of Dark Energy and modified gravity. In particular, I will focus on recent detections of the lensing signal from dark matter halos (from ACT, SPT and Planck) and the promise of CMB lensing in calibrating masses of galaxy clusters.