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The Trispectrum of the 4 Year COBE-DMR data

(2001)

Authors:

M Kunz, AJ Banday, PG Castro, PG Ferreira, KM Gorski
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The Trispectrum of the 4 Year COBE-DMR data

ArXiv astro-ph/0111250 (2001)

Authors:

M Kunz, AJ Banday, PG Castro, PG Ferreira, KM Gorski

Abstract:

We propose an estimator for the trispectrum of a scalar random field on a sphere, discuss its geometrical and statistical properties, and outline its implementation. By estimating the trispectrum of the 4 year COBE-DMR data (in HEALPix pixelization) we find new evidence of a non-Gaussian signal associated with a known systematic effect. We find that by removing data from the sky maps for those periods of time perturbed by this effect, the amplitudes of the trispectrum coefficients become completely consistent with predictions for a Gaussian sky. These results reinforce the importance of statistical methods based in harmonic space for quantifying non-Gaussianity.
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A High Spatial Resolution Analysis of the MAXIMA-1 Cosmic Microwave Background Anisotropy Data

The Astrophysical Journal American Astronomical Society 561:1 (2001) l1-l5

Authors:

AT Lee, P Ade, A Balbi, J Bock, J Borrill, A Boscaleri, P de Bernardis, PG Ferreira, S Hanany, VV Hristov, AH Jaffe, PD Mauskopf, CB Netterfield, E Pascale, B Rabii, PL Richards, GF Smoot, R Stompor, CD Winant, JHP Wu
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Cosmological Implications of the MAXIMA-1 High-Resolution Cosmic Microwave Background Anisotropy Measurement

The Astrophysical Journal American Astronomical Society 561:1 (2001) l7-l10

Authors:

R Stompor, M Abroe, P Ade, A Balbi, D Barbosa, J Bock, J Borrill, A Boscaleri, P de Bernardis, PG Ferreira, S Hanany, V Hristov, AH Jaffe, AT Lee, E Pascale, B Rabii, PL Richards, GF Smoot, CD Winant, JHP Wu
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Frequentist Estimation of Cosmological Parameters from the MAXIMA-1 Cosmic Microwave Background Anisotropy Data

(2001)

Authors:

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