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Center for Astrophysics Research and Technologies Seminar Series Information


Events Calendar

A 2020s Vision of CMB Lensing and Primordial Gravitational Wave Detection

Tuesday November 29, 2022
2:00 pm

 Presenter:  Marius Millea, UC Berkeley
 Series:  Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars
 Abstract:  Although a rich science case exists, the main goals of upcoming CMB experiments are to probe cosmic structure out to z~10 via gravitational lensing, and then to remove this lensing effect, as it is a foreground for detecting signatures of primordial gravitational waves from inflation. This next generation of CMB probes represent a huge leap forward in precision on these signals, reducing the effective noise levels of the reconstructed gravitational lensing and gravitational wave signatures by multiple orders of magnitude. However, this improved precision renders several crucial existing analysis techniques obsolete, with the exciting (if nail-biting) challenge of developing new methods in time for data which is just on our doorstep. I will describe my work developing such new tools, made possible by Bayesian methods, modern statistical techniques, and borrowing ideas from machine learning. I will present the recent first-ever application of these methods to data from the South Pole Telescope, and discuss new insights they will enable into cosmic structure, inflation, and even reionization and astrophysical foregrounds.
 Host:  Francis-Yan Cyr-Racine
 Location:  PAIS-3205, PAIS

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