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HEPL / KIPAC Seminar

Wednesday, October 18, 2017

Shuay-Pwu “Patty” Ho

Princeton University

“Large Millimeter Bolometric Arrays for Cosmic Microwave Background Observations”

Abstract: The cosmic microwave background (CMB) continues to reveal new aspects of the large scale universe. For example, current projects are searching for evidence of primordial gravitational waves, for signatures sensitive to the sum of the neutrino masses, and for further understanding of the formation and growth of large structures under the influence of gravity in the accelerating universe.

Technologies for ground-based and balloon-borne instruments measuring the polarization of the CMB have been well established and advanced in the last decade. Two upgraded bolometric polarimeters on the Atacama Cosmology Telescope (ACT), the ACT Polarimeter (ACTPol) and the Advanced ACTPol, have made and will make measurements of the temperature and polarization in the Cosmic Microwave Background (CMB) with arcminute resolution.

In this talk, I will focus on the instrumentation on these state-of-the-art arrays, especially on Advanced ACTPol. I will also cover the results coming from the two-season cosmological results presented in Louis et al. (2016) and other science results from ACTPol data. I will conclude with the current status of the ACTPol/AdvACT projects.


Time: 4:00pm – 5:00pm

Location: Physics/Astrophysics Bldg., Kistler Conference Rooms 102/103 (Map)

(Light refreshments available 3:45pm; Presentation begins at 4:00pm)

Open to All