S. A. Kernasovskiy

TL;DR: An excess of B-mode power over the base lensed-ΛCDM expectation is found in the range 30 < ℓ < 150, inconsistent with the null hypothesis at a significance of >5σ, and it is shown that systematic contamination is much smaller than the observed excess.

TL;DR: Strong evidence for dust and no statistically significant evidence for tensor modes is found and various model variations and extensions are probe, including adding a synchrotron component in combination with lower frequency data, and find that these make little difference to the r constraint.

TL;DR: The BICEP2 telescope as mentioned in this paper measured the polarization of the cosmic microwave background (CMB) on angular scales of 1 to 5 degrees, near the expected peak of the B-mode polarization signature of primordial gravitational waves from cosmic inflation.

TL;DR: The BICEP2 telescope as discussed by the authors measured the polarization of the cosmic microwave background (CMB) on angular scales of 1°-5° (l = 40-200), near the expected peak of the B-mode polarization signature of primordial gravitational waves from cosmic inflation.

TL;DR: In this paper, the authors report results from the 2012 and 2013 observing seasons, during which the Keck Array consisted of five receivers all operating in the same (150 GHz) frequency band and observing field as BICEP2.