Professor Pedro Ferreira: Publications

Estimate of the Cosmological Bispectrum from the MAXIMA-1 Cosmic Microwave Background Map

Physical Review Letters 88 (2002) 241302 4pp

Authors:

P Ferreira, M. Santos, S. Hanany, J. Magueijo

Making maps of the cosmic microwave background: The MAXIMA example

Physical Review D 65:2 (2002)

Authors:

R Stompor, A Balbi, JD Borrill, PG Ferreira, S Hanany, AH Jaffe, AT Lee, S Oh, B Rabii, PL Richards, GF Smoot, CD Winant, JHP Wu

Abstract:

This work describes cosmic microwave background (CMB) data analysis algorithms and their implementations, developed to produce a pixelized map of the sky and a corresponding pixel-pixel noise correlation matrix from time ordered data for a CMB mapping experiment. We discuss in turn algorithms for estimating noise properties from the time ordered data, techniques for manipulating the time ordered data, and a number of variants of the maximum likelihood map-making procedure. We pay particular attention to issues pertinent to real CMB data, and present ways of incorporating them within the framework of maximum likelihood map making. Making a map of the sky is shown to be not only an intermediate step rendering an image of the sky, but also an important diagnostic stage, when tests for and/or removal of systematic effects can efficiently be performed. The case under study is the MAXIMA-I data set. However, the methods discussed are expected to be applicable to the analysis of other current and forthcoming CMB experiments. ©2001 The American Physical Society.

The MAXIMA and MAXIPOL experiments

EXPERIMENTAL COSMOLOGY AT MILLIMETRE WAVELENGTHS 616 (2002) 12-17

Authors:

PL Richards, M Abroe, P Ade, A Balbi, J Bock, J Borrill, A Boscaleri, P de Bernardis, J Collins, PG Ferreira, S Hanany, VV Hristov, AH Jaffe, B Johnson, AT Lee, T Matsumu, PD Mauskopf, CB Netterfield, E Pascale, B Rabii, GF Smoot, R Stompor, CD Winant, JHP Wu

Tests for Gaussianity of the MAXIMA-1 cosmic microwave background map

Physical Review Letters 87:25 (2001)

Authors:

JHP Wu, A Balbi, J Borrill, PG Ferreira, S Hanany, AH Jaffe, AT Lee, B Rabii, PL Richards, GF Smoot, R Stompor, CD Winant

Abstract:

A series of Gaussianity tests were performed on the MAXIMA-1 CMB map. To optimize both the resolution and the signal-to-noise ratio for these tests, a map with 5972 square pixels of 8' each was used. Using these high-quality data, the Gaussianity of CMB anisotropy on subdegree scales was probed for the first time. It was found that the MAXIMA-1 CMB map is consistent with Gaussianity on angular scales between 10 arcmin and 5 deg.

Have Acoustic Oscillations been Detected in the Current Cosmic Microwave Background Data?

(2001)

Authors:

M Douspis, PG Ferreira

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