FIRST SEASON QUaD CMB TEMPERATURE AND POLARIZATION POWER SPECTRA
نویسندگان
چکیده
QUaD is a bolometric CMB polarimeter sited at the South Pole, operating at frequencies of 100 and 150 GHz. In this paper we report preliminary results from the first season of operation (austral winter 2005). All six CMB power spectra are presented derived as cross spectra between the 100 and 150 GHz maps using 67 days of observation in a low foreground region of approximately 60 deg. These data are a small fraction of the data acquired to date. The measured spectra are consistent with the CDM cosmological model. We perform jackknife tests that indicate that the observed signal has negligible contamination from instrumental systematics. In addition, by using a frequency jackknife we find no evidence for foreground contamination. Subject headinggs: polarization
منابع مشابه
Measurement of the Temperature and Polarization Anisotropies in the Cosmic Microwave Background with Quad
This thesis paper describes QUaD, a millimetric polarimeter designed to precisely measure the temperature and polarization anisotropies in the cosmic microwave background (CMB) radiation. QUaD was built and integrated between 2000 and 2004, and commissioned at the south pole in the austral summer of 2004/2005. First light was achieved in February 2005, and QUaD acquired a full austral winter of...
متن کاملCurrent status of the QUaD 1st season analysis
I describe the current status of the analysis of the 1st season’s data taken with the QUaD Cosmic Microwave Background (CMB) polarisation telescope. QUaD is a CMB polarisation bolometer-array telescope. The instrument was installed at the South Pole over the 2004-05 Austral Summer and completed its first season of observations during the 2005 Austral Winter. The analysis of these data is in an ...
متن کاملSECOND AND THIRD SEASON QUaD COSMIC MICROWAVE BACKGROUND TEMPERATURE AND POLARIZATION POWER SPECTRA
We report results from the second and third seasons of observation with the QUaD experiment. Angular power spectra of the cosmic microwave background are derived for both temperature and polarization at both 100 GHz and 150 GHz, and as cross-frequency spectra. All spectra are subjected to an extensive set of jackknife tests to probe for possible systematic contamination. For the implemented dat...
متن کاملMarginal Distributions for Cosmic Variance Limited Cmb Polarization Data
We provide computationally convenient expressions for all marginal distributions of the polarization CMB power spectrum distribution P (Cl|σl), where Cl = {CTT l , C l , C l , C l } denotes the set of ensemble averaged polarization CMB power spectra, and σl = {σTT l , σ l , σ l , σ l } the set of the realization specific polarization CMB power spectra. This distribution describes the CMB power ...
متن کاملDegree-scale Cmb Polarization Measurements from Three Years of Bicep1 Data
BICEP1 is a millimeter-wavelength telescope designed specifically to measure the inflationary B-mode polarization of the Cosmic Microwave Background (CMB) at degree angular scales. We present results from an analysis of the data acquired during three seasons of observations at the South Pole (2006 to 2008). This work extends the two-year result published in Chiang et al. (2010), with additional...
متن کامل