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Parameter Estimation from Improved Measurements of the Cosmic Microwave Background from QUaD

Gupta, S. and Bock, J. and Kovac, J. and Lange, A. E. and Leitch, E. and Orlando, A. and Rusholme, B. and Zemcov, M. (2010) Parameter Estimation from Improved Measurements of the Cosmic Microwave Background from QUaD. Astrophysical Journal, 716 (2). pp. 1040-1046. ISSN 0004-637X.

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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 data set into temperature and polarization subsets and show that the best-fit confidence regions for the ΛCDM six-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 data set using the optimal pivot scale of k_p = 0.013 Mpc^(–1) to be {h^2Ω_c, h^2Ω_b, H_0, A_s, n_s, τ} = {0.113, 0.0224, 70.6, 2.29 × 10^(–9), 0.960, 0.086}.

Item Type:Article
Related URLs:
URLURL TypeDescription
Bock, J.0000-0002-5710-5212
Rusholme, B.0000-0001-7648-4142
Zemcov, M.0000-0001-8253-1451
Additional Information:© 2010 The American Astronomical Society. Received 2009 September 9; accepted 2010 April 29; published 2010 May 26. QUaD is funded by the National Science Foundation in the USA, through grants ANT-0338138, ANT-0338335, & ANT- 0338238, by the Science and Technology Facilities Council (STFC) in the UK, and by the Science Foundation Ireland. P.G.C. acknowledges funding from the Portuguese FCT. S.E.C. acknowledges support from a Stanford Terman Fellowship. J.R.H. acknowledges the support of an NSF Graduate Research Fellowship, a Stanford Graduate Fellowship, and a NASA Postdoctoral Fellowship. Y.M. acknowledges support from a SUPA Prize studentship. C.P. acknowledges partial support from the Kavli Institute for Cosmological Physics through the grant NSF PHY-0114422. E.Y.W. acknowledges receipt of an NDSEG fellowship. M.Z. acknowledges support from a NASA Postdoctoral Fellowship.We acknowledge the use of the CAMB (Lewis et al. 2000), CosmoMC (Lewis & Bridle 2002), and HEALPix (G´orski et al. 2005) packages. We acknowledge the use of the Legacy Archive for Microwave Background Data Analysis (LAMBDA). Support for LAMBDA is provided by the NASA Office of Space Science. This work was performed using the computational facilities of the Advanced Research Computing @ Cardiff (ARCCA) Division, Cardiff University.
Funding AgencyGrant Number
Science and Technology Facilities Council (STFC)UNSPECIFIED
Science Foundation IrelandUNSPECIFIED
Fundação para a Ciência e a Tecnologia (FCT)UNSPECIFIED
Stanford Terman FellowshipUNSPECIFIED
NSF Graduate Research FellowshipUNSPECIFIED
Stanford Graduate FellowshipUNSPECIFIED
NASA Postdoctoral FellowshipUNSPECIFIED
State University Presidents Association (SUPA) Prize studentshipUNSPECIFIED
NSF Kavli Institute for Cosmological PhysicsPHY-0114422
National Defense Science and Engineering Graduate Fellowship (NDSEG)UNSPECIFIED
NASA Postdoctoral FellowshipUNSPECIFIED
Subject Keywords:cosmic background radiation; cosmological parameters
Issue or Number:2
Classification Code:PACS: 98.70.Vc; 95.35.+d; 95.30.Gv; 98.80.Cq
Record Number:CaltechAUTHORS:20100629-134623858
Persistent URL:
Official Citation:S. Gupta et al 2010 ApJ 716 1040 doi: 10.1088/0004-637X/716/2/1040
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18857
Deposited By: Ruth Sustaita
Deposited On:30 Jun 2010 15:46
Last Modified:09 Mar 2020 13:19

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