Скачать или смотреть Part 3 - Photographing the Infant Universe

Photographing the Infant Universe, part 3: The Polarization of the CMB

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Description of the talk:

Speaker: Professor Bradley Johnson, Columbia University
Part of Nevis Labs' #ScienceOnHudson lecture series. Recorded Thu Dec 8, 2016

Historians and archaeologists can only dream of taking photographs of ancient civilizations, of observing their daily activities, of watching the constructions of cities and the evolution of conflicts. Incredibly, with modern tools and technologies, cosmologists have at their fingertips the capability to do just that, to photograph the formation and evolution of our universe.

I will describe the experimental and observational methods that make this possible, and review the highlights of what we have learned as we have made observations of the universe as it was further and further back in time. Finally, I will discuss the current cosmological frontier; the challenge of observing the universe when it was much less than a second old. These observations hold the promise of revealing the nature of fundamental physics at the very moment at which our universe came into being.