Speaker
Description
Gravitational lensing of the Cosmic Microwave Background is a very valuable cosmological signal, detected at very high significance by several experiments, and its SNR is expected to increase by a factor of 10 or so in the next decade.
At the same time, it has also become an hindrance to some important science goals of CMB experiments, most notably for best constraints on a primordial background of gravitational waves, which should also see very significant improvements in the coming years.
After reviewing current lensing estimation techniques and recent results, I’ll discuss how removal of the lensing signal (`delensing') typically helps measuring small parameters that affects the CMB polarization.
Very sensitive experiments must rely on novel more powerful algorithms to optimally extract or remove the lensing signal, and I’ll discuss recent developements.
