Publications by authors named "C Pryke"
Article Synopsis
- Scientists studied the kinematic Sunyaev-Zel'dovich (kSZ) effect using data from two telescopes, the South Pole Telescope and Herschel-SPIRE, covering a large area in the sky.
- They found a strong signal indicating that there is a trispectrum, which is a kind of pattern in the data, but it had contributions from other sources too, like cosmic microwave background lensing and foregrounds.
- By analyzing the data, they couldn't find just the kSZ signal alone, but they set limits on how long the reionization period lasted in the early universe, which helps us understand its history better.
We present results from an analysis of all data taken by the BICEP2, Keck Array, and BICEP3 CMB polarization experiments up to and including the 2018 observing season. We add additional Keck Array observations at 220 GHz and BICEP3 observations at 95 GHz to the previous 95/150/220 GHz dataset. The Q/U maps now reach depths of 2.
View Article and Find Full Text PDFWe report the first detection of gravitational lensing due to galaxy clusters using only the polarization of the cosmic microwave background (CMB). The lensing signal is obtained using a new estimator that extracts the lensing dipole signature from stacked images formed by rotating the cluster-centered Stokes QU map cutouts along the direction of the locally measured background CMB polarization gradient. Using data from the SPTpol 500 deg^{2} survey at the locations of roughly 18 000 clusters with richness λ≥10 from the Dark Energy Survey (DES) Year-3 full galaxy cluster catalog, we detect lensing at 4.
View Article and Find Full Text PDFWe present results from an analysis of all data taken by the bicep2/Keck CMB polarization experiments up to and including the 2015 observing season. This includes the first Keck Array observations at 220 GHz and additional observations at 95 and 150 GHz. The Q and U maps reach depths of 5.
View Article and Find Full Text PDFWe present results from an analysis of all data taken by the BICEP2 and Keck Array cosmic microwave background (CMB) polarization experiments up to and including the 2014 observing season. This includes the first Keck Array observations at 95 GHz. The maps reach a depth of 50 nK deg in Stokes Q and U in the 150 GHz band and 127 nK deg in the 95 GHz band.
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