School of Physics Astrophysics

POLARBEAR & the Simons Array


A rendition of what the Simons Array will look like when all three telescopes are installed.

POLARBEAR is an experiment to measure the polarization of the cosmic microwave background - relic light from the Big Bang. The POLARBEAR experiment is currently being upgraded from one telescope to three; the new three telescope array will be called the Simons Array. Please contact Christian Reichardt for information about the project.

The POLARBEAR experiment observes from the Huan Tran Telescope  which is located on the Atacama Plateau in Chile. At an elevation of 5200 m, this is one of the highest astronomical observatories in the world. Nearby observatories include the Atacama Large Millimeter/submillimeter Array (ALMA) and the Atacama Cosmology Telescope (ACT).

Like the South Pole Telescope, the POLARBEAR experiment is making precise measurements of the "B-mode" polarization of the cosmic microwave background (CMB). Polarized B-modes are generated through two mechanisms: gravitational lensing by the large-scale distribution of matter in the Universe, and gravitational waves that are sourced by the rapid expansion of the Universe during Inflation.

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