ORCID Profile
0000-0002-1623-5651
Current Organisations
University of California, San Diego
,
University of New Mexico
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Publisher: American Physical Society (APS)
Date: 18-08-2023
Publisher: American Astronomical Society
Date: 20-11-2020
Publisher: American Astronomical Society
Date: 17-04-2020
Publisher: American Astronomical Society
Date: 27-05-2022
Abstract: We report an improved measurement of the degree-scale cosmic microwave background B -mode angular-power spectrum over 670 deg 2 sky area at 150 GHz with P olarbear . In the original analysis of the data, errors in the angle measurement of the continuously rotating half-wave plate, a polarization modulator, caused significant data loss. By introducing an angle-correction algorithm, the data volume is increased by a factor of 1.8. We report a new analysis using the larger data set. We find the measured B -mode spectrum is consistent with the ΛCDM model with Galactic dust foregrounds. We estimate the contamination of the foreground by cross-correlating our data and Planck 143, 217, and 353 GHz measurements, where its spectrum is modeled as a power law in angular scale and a modified blackbody in frequency. We place an upper limit on the tensor-to-scalar ratio r 0.33 at 95% confidence level after marginalizing over the foreground parameters.
Publisher: American Physical Society (APS)
Date: 04-2020
Publisher: American Astronomical Society
Date: 18-11-2019
Publisher: American Astronomical Society
Date: 14-01-2019
Publisher: American Astronomical Society
Date: 04-09-2019
Publisher: American Astronomical Society
Date: 07-2020
Location: United States of America
Location: United States of America
No related grants have been discovered for Darcy Barron.