Parameter Estimation from Improved Measurements of the CMB from QUaD
Abstract
We evaluate the contribution of cosmic microwave background (CMB) polarization spectra to cosmological parameter constraints. We produce cosmological parameters using high-quality CMB polarization data from the ground-based QUaD experiment and demonstrate for the majority of parameters that there is significant improvement on the constraints obtained from satellite CMB polarization data. We split a multi-experiment CMB dataset into temperature and polarization subsets and show that the best-fit confidence regions for the LCDM 6-parameter cosmological model are consistent with each other, and that polarization data reduces the confidence regions on all parameters. We provide the best limits on parameters from QUaD EE/BB polarization data and we find best-fit parameters from the multi-experiment CMB dataset using the optimal pivot scale of k_p=0.013 Mpc-1 to be {omch2, ombh2, H_0, A_s, n_s, tau}= {0.113, 0.0224, 70.6, 2.29 times 10^-9, 0.960, 0.086}.
Keywords
Cite
@article{arxiv.0909.1621,
title = {Parameter Estimation from Improved Measurements of the CMB from QUaD},
author = {QUaD collaboration and S. Gupta and P. Ade and J. Bock and M. Bowden and M. L. Brown and G. Cahill and P. G. Castro and S. Church and T. Culverhouse and R. B. Friedman and K. Ganga and W. K. Gear and J. Hinderks and J. Kovac and A. E. Lange and E. Leitch and S. J. Melhuish and Y. Memari and J. A. Murphy and A. Orlando and C. O'Sullivan and L. Piccirillo and C. Pryke and N. Rajguru and B. Rusholme and R. Schwarz and A. N. Taylor and K. L. Thompson and A. H. Turner and E. Y. S. Wu and M. Zemcov},
journal= {arXiv preprint arXiv:0909.1621},
year = {2014}
}
Comments
7 pages, 5 figures, updated to reflect published version, minor changes to spelling and format