Polarization of the Cosmic Gravitational Wave Background

Robert Caldwell (Dartmouth)
Event Date and Time: 
Thu, 2018-09-20 16:00 - 17:00
Hennings 201
Local Contact: 
Douglas Scott
Intended Audience: 

The Cosmic Gravitational Wave Background (CGB) is a hypothesized relic radiation field that, if detected, would give us clues to the earliest moments of the history of the Universe. In this talk, accessible to students and non-experts, I will describe the physical processes that can give rise to a CGB, novel features including a net polarization of the gravitational waves (as distinct from the polarization of cosmic microwave background photons), and methods of detection. I will also discuss the ability of the proposed Laser Interferometer Space Antenna, LISA, to detect the CGB.


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