Skip to Main content Skip to Navigation
Journal articles

MAXIPOL: Data Analysis and Results

Abstract : We present results from and the analysis of data from MAXIPOL, a balloon-borne experiment designed to measure the polarization in the Cosmic Microwave Background (CMB). MAXIPOL is the first CMB experiment to obtain results using a rotating half-wave plate as a rapid polarization modulator. We report results from observations of a sky area of 8 deg^2 with 10-arcmin resolution, providing information up to l~700. We use a maximum-likelihood method to estimate maps of the Q and U Stokes parameters from the demodulated time streams, and then both Bayesian and frequentist approaches to compute the EE, EB, and BB power spectra. Detailed formalisms of the analyses are given. A variety of tests show no evidence for systematic errors. The Bayesian analysis gives weak evidence for an EE signal. The EE power is 55^{+51}_{-45} \mu K^2 at the 68% confidence level for l=151-693. Its likelihood function is asymmetric and skewed positive such that with a uniform prior the probability of a positive EE power is 96%. The powers of EB and BB signals at the 68% confidence level are 18^{+27}_{-34} \mu K^2 and -31^{+31}_{-19} \mu K^2 respectively and thus consistent with zero. The upper limit of the BB-mode at the 95% confidence level is 9.5 \mu K. Results from the frequentist approach are in agreement within statistical errors. These results are consistent with the current concordance LCDM model.
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00138184
Contributor : Simone Lantz <>
Submitted on : Friday, March 23, 2007 - 4:21:15 PM
Last modification on : Saturday, September 19, 2020 - 4:53:17 AM

Links full text

Identifiers

Citation

J. H. P. Wu, J. Zuntz, M. E. Abroe, P. A. R. Ade, J. Bock, et al.. MAXIPOL: Data Analysis and Results. The Astrophysical Journal, American Astronomical Society, 2007, 665, pp.55-66. ⟨10.1086/518112⟩. ⟨in2p3-00138184⟩

Share

Metrics

Record views

422