Search Results - "H. K. Eriksen"

Lower growth rate from recent redshift space distortion measurements than expected from Planck by Macaulay, E, Wehus, I K, Eriksen, H K

“…We perform a metastudy of recently published redshift space distortion (RSD) measurements of the cosmological growth rate, f(z)σ8(z). We analyze the latest…”
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Cosmic Birefringence from the Planck Data Release 4 by Diego-Palazuelos, P, Eskilt, J R, Minami, Y, Tristram, M, Sullivan, R M, Banday, A J, Barreiro, R B, Eriksen, H K, Górski, K M, Keskitalo, R, Komatsu, E, Martínez-González, E, Scott, D, Vielva, P, Wehus, I K

“…We search for the signature of parity-violating physics in the cosmic microwave background, called cosmic birefringence, using the Planck data release 4. We…”
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Power Asymmetry in Cosmic Microwave Background Fluctuations from Full Sky to Sub-Degree Scales: Is the Universe Isotropic? by Hansen, F. K, Banday, A. J, Górski, K. M, Eriksen, H. K, Lilje, P. B

“…ABSTRACT We repeat and extend the analysis of Eriksen et al. and Hansen et al., testing the isotropy of the cosmic microwave background fluctuations. We find…”
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Asymmetries in the Cosmic Microwave Background Anisotropy Field by Eriksen, H. K, Hansen, F. K, Banday, A. J, Górski, K. M, Lilje, P. B

“…We report on the results from two independent but complementary statistical analyses of the Wilkinson Microwave Anisotropy Probe (WMAP) first- year data, based…”
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Joint Bayesian Component Separation and CMB Power Spectrum Estimation by Eriksen, H. K, Jewell, J. B, Dickinson, C, Banday, A. J, Górski, K. M, Lawrence, C. R

“…We describe and implement an exact, flexible, and computationally efficient algorithm for joint component separation and CMB power spectrum estimation,…”
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Hemispherical Power Asymmetry in the Third-Year Wilkinson Microwave Anisotropy Probe Sky Maps by Eriksen, H. K, Banday, A. J, Górski, K. M, Hansen, F. K, Lilje, P. B

“…We consider the issue of hemispherical power asymmetry in the third-year WMAP data, adopting a previously introduced modulation framework. Computing both…”
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Evidence of Vorticity and Shear at Large Angular Scales in the WMAP Data: A Violation of Cosmological Isotropy? by Jaffe, T. R, Banday, A. J, Eriksen, H. K, Górski, K. M, Hansen, F. K

“…Motivated by the large-scale asymmetry observed in the cosmic microwave background sky, we consider a specific class of anisotropic cosmological…”
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Joint Bayesian estimation of tensor and lensing B modes in the power spectrum of CMB polarization data by Remazeilles, M, Dickinson, C, Eriksen, H K, Wehus, I K

“…Abstract We investigate the performance of a simple Bayesian fitting approach to correct the cosmic microwave background (CMB) B-mode polarization for…”
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On Foreground Removal from the Wilkinson Microwave Anisotropy Probe Data by an Internal Linear Combination Method: Limitations and Implications by Eriksen, H. K, Banday, A. J, Górski, K. M, Lilje, P. B

“…We study the Internal Linear Combination (ILC) method presented by the Wilkinson Microwave Anisotropy Probe (WMAP) science team, with the goal of determining…”
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Cosmic Microwave Background Component Separation by Parameter Estimation by Eriksen, H. K, Dickinson, C, Lawrence, C. R, Baccigalupi, C, Banday, A. J, Górski, K. M, Hansen, F. K, Lilje, P. B, Pierpaoli, E, Seiffert, M. D, Smith, K. M, Vanderlinde, K

“…We propose a method for CMB component separation based on standard Bayesian parameter estimation techniques. We assume a parametric spectral model for each…”
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Testing for Non-Gaussianity in the Wilkinson Microwave Anisotropy Probe Data: Minkowski Functionals and the Length of the Skeleton by Eriksen, H. K, Novikov, D. I, Lilje, P. B, Banday, A. J, Górski, K. M

“…The three Minkowski functionals and the recently defined length of the skeleton are estimated for the co-added first-year Wilkinson Microwave Anisotropy Probe…”
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Estimation of Polarized Power Spectra by Gibbs Sampling by Larson, D. L, Eriksen, H. K, Wandelt, B. D, Górski, K. M, Huey, Greg, Jewell, J. B, O’Dwyer, I. J

“…Earlier papers introduced a method of accurately estimating the angular cosmic microwave background temperature power spectrum based on Gibbs sampling. Here we…”
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Fast and precise map-making for massively multi-detector CMB experiments by Sutton, D., Zuntz, J. A., Ferreira, P. G., Brown, M. L., Eriksen, H. K., Johnson, B. R., Kusaka, A., Næss, S. K., Wehus, I. K.

“…Future cosmic microwave background (CMB) polarization experiments aim to measure an unprecedentedly small signal – the primordial gravity wave component of the…”
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Multipole Vector Anomalies in the First-Year WMAP Data: A Cut-Sky Analysis by Bielewicz, P, Eriksen, H. K, Banday, A. J, Górski, K. M, Lilje, P. B

“…We apply the recently defined multipole vector framework to the frequency-specific first-year WMAP sky maps, estimating the low-l multipole coefficients from…”
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The N-Point Correlation Functions of the First-Year Wilkinson Microwave Anisotropy Probe Sky Maps by Eriksen, H. K, Banday, A. J, Górski, K. M, Lilje, P. B

“…We compute the two-, three- and four-point correlation functions from the Wilkinson Microwave Anisotropy Probe (WMAP) first-year data and compare these with a…”
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Bayesian Component Separation and Cosmic Microwave Background Estimation for the Five-Year WMAP Temperature Data by Dickinson, C, Eriksen, H. K, Banday, A. J, Jewell, J. B, Górski, K. M, Huey, G, Lawrence, C. R, O'Dwyer, I. J, Wandelt, B. D

“…A well-tested and validated Gibbs sampling code, that performs component separation and cosmic microwave background (CMB) power spectrum estimation, was…”
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Fast and Efficient Template Fitting of Deterministic Anisotropic Cosmological Models Applied to WMAP Data by Jaffe, T. R, Banday, A. J, Eriksen, H. K, Górski, K. M, Hansen, F. K

“…We explore methods of fitting templates to cosmic microwave background (CMB) data, and in particular demonstrate the application of the total convolver…”
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The Joint Large-Scale Foreground-CMB Posteriors of the 3 Year WMAP Data by Eriksen, H. K, Dickinson, C, Jewell, J. B, Banday, A. J, Górski, K. M, Lawrence, C. R

“…Using a Gibbs sampling algorithm for joint CMB estimation and component separation, we compute the large-scale CMB and foreground posteriors of the 3 yr WMAP…”
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Point-Source Power in 3 Year Wilkinson Microwave Anisotropy Probe Data by Huffenberger, K. M, Eriksen, H. K, Hansen, F. K

“…Using a set of multifrequency cross spectra computed from the 3 year WMAP sky maps, we fit for the unresolved point-source contribution. For a white-noise…”
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A Reanalysis of the 3 Year Wilkinson Microwave Anisotropy Probe Temperature Power Spectrum and Likelihood by Eriksen, H. K, Huey, Greg, Saha, R, Hansen, F. K, Dick, J, Banday, A. J, Górski, K. M, Jain, P, Jewell, J. B, Knox, L, Larson, D. L, O’Dwyer, I. J, Souradeep, T, Wandelt, B. D

“…We analyze the 3 yr Wilkinson Microwave Anisotropy Probe (WMAP) temperature anisotropy data seeking to confirm the power spectrum and likelihoods published by…”
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