Virtual ASD Colloquium
|Gazing Back to the Dawn of Time from Above the Clouds
Jeff Filippini (University of Illinois at Urbana-Champaign)
Inflation is thought to have seeded the cosmos with a hum of primordial gravitational waves - unique messengers from the universe's earliest moments. If present, these should have left a unique but vanishingly faint signature in the polarization of the cosmic microwave background. SPIDER is a powerful balloon-borne instrument designed to tease out this faint polarization pattern amidst obscuring Galactic foregrounds, from a vantage point 35 km above the Antarctic ice. I will discuss SPIDER's successful long-duration balloon flight, its recently-released constraints on cosmology and Galactic foregrounds, and the program's upcoming second flight, which will make deep maps of Galactic dust with new 280 GHz receivers. I will also preview upcoming missions to explore different epochs of cosmic history from stratospheric balloons, including TIM, which will observe the history of star formation through far-infrared line-intensity mapping.
|Date||April 27, 2021|
|Start/End Time||03:45 PM - 05:00 PM|
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