Multipole Vector Anomalies in the First-Year WMAP Data: A Cut-Sky Analysis

@article{Bielewicz2005MultipoleVA,
  title={Multipole Vector Anomalies in the First-Year WMAP Data: A Cut-Sky Analysis},
  author={Pawel Bielewicz and Hans Kristian Eriksen and Anthony J. Banday and Krzysztof M. Gorski and Per B. Lilje},
  journal={The Astrophysical Journal},
  year={2005},
  volume={635},
  pages={750 - 760}
}
We apply the recently defined multipole vector framework to the frequency-specific first-year WMAP sky maps, estimating the low-l multipole coefficients from the high-latitude sky by means of a power equalization filter. While most previous analyses of this type have considered only heavily processed (and foreground-contaminated) full-sky maps, the present approach allows for greater control of residual foregrounds and therefore potentially also for cosmologically important conclusions. The low… 
On the large-angle anomalies of the microwave sky
We apply the multipole vector framework to full-sky maps derived from the first-year Wilkinson Microwave Anisotropy Probe (WMAP) data. We significantly extend our earlier work showing that the two
Large scale alignment anomalies of CMB anisotropies: a new test for residuals applied to WMAP 5yr maps
We analyze the alignment of the low multipoles (quadrupole and octupole) of various maps of the WMAP 5yr release: the CMB maps obtained with ILC and MCMC methods, the CMB map in the V band after
Effect of foregrounds on the cosmic microwave background radiation multipole alignment
We analyse the effect of foregrounds on the observed alignment of the cosmic microwave background radiation (CMBR) quadrupole and octopole. The alignment between these multipoles is studied by using
Hemispherical power asymmetry: parameter estimation from cosmic microwave background WMAP5 data
We re-examine the evidence for hemispherical power asymmetry, detected in the cosmic microwave background (CMB) WMAP (Wilkinson Microwave Anisotropy Probe) data using a new method. We use a data
On the coherence of WMAP and Planck temperature maps
The recent data release of ESA's Planck mission together with earlier WMAP releases provide the first opportunity to compare high resolution full sky Cosmic Microwave Background temperature
Parity asymmetry in the CMBR temperature power spectrum
We study the power asymmetry between even and odd multipoles in the multipolar expansion of cosmic microwave background temperature data from the Wilkinson Microwave Anisotropy Probe (WMAP), recently
Planck2013 results. XXIII. Isotropy and statistics of the CMB
We test the statistical isotropy and Gaussianity of the cosmic microwave background (CMB) anisotropies using observations made by the Planck satellite. Our results are based mainly on the full Planck
The Non-Gaussian Cold Spot in the 3 Year Wilkinson Microwave Anisotropy Probe Data
The non-Gaussian cold spot detected in wavelet space in the WMAP 1 yr data is detected again in the co-added WMAP 3 yr data at the same position (b = -57°, l = 209°) and size in the sky (≈10°). The
Searching for non-Gaussianity in the WMAP data
Some analyses of recent cosmic microwave background (CMB) data have provided hints that there are deviations from Gaussianity in the WMAP CMB temperature fluctuations. Given the far-reaching
...
...

References

SHOWING 1-10 OF 48 REFERENCES
Low‐order multipole maps of cosmic microwave background anisotropy derived from WMAP
Recent analyses of the Wilkinson Microwave Anisotropy Probe (WMAP) data have suggested that the low-order multipoles of the cosmic microwave background (CMB) anisotropy distribution show
The multipole vectors of the Wilkinson Microwave Anisotropy Probe, and their frames and invariants
We investigate the statistical isotropy (SI) and Gaussianity of the cosmic microwave background fluctuations, using a set of multipole vector functions capable of separating these two issues. In
The Multipole Vectors of WMAP, and their frames and invariants
TLDR
The Statistical Isotropy and Gaussianity of the CMB fluctuations are investigated using a set of multipole vector functions capable of separating these two issues, and the multipole frame is found to be suitably sensitive to galactic cuts.
The N-Point Correlation Functions of the First-Year Wilkinson Microwave Anisotropy Probe Sky Maps
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 Monte Carlo ensemble of 5000
Assessing the effects of foregrounds and sky removal in WMAP
Many recent analyses have indicated that large scale Wilkinson Microwave Anisotropy Probe (WMAP) data display anomalies that appear inconsistent with the standard cosmological paradigm. However, the
Power Spectrum of Primordial Inhomogeneity Determined from the FOUR-Year COBE DMR Sky Maps
Fourier analysis and power spectrum estimation of the cosmic microwave background anisotropy on an incompletely sampled sky developed by Górski has been applied to the 4 yr COBE DMR 31.5, 53, and 90
First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
We present full-sky microwave maps in five frequency bands (23-94 GHz) from the Wilkinson Microwave Anisotropy Probe (WMAP) first-year sky survey. Calibration errors are less than 0.5%, and the low
Significance of the largest scale CMB fluctuations in WMAP
We investigate anomalies reported in the Cosmic Microwave Background maps from the Wilkinson Microwave Anisotropy Probe (WMAP) satellite on very large angular scales and discuss possible
Cosmological parameters and the WMAP data revisited
Several recent papers have made claims about the detection of an asymmetric distribution of large-scale power in the cosmic microwave background (CMB) anisotropy as measured by the WMAP satellite. In
First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Foreground Emission
The WMAP mission has mapped the full sky to determine the geometry, content, and evolution of the universe. Full sky maps are made in five microwave frequency bands to separate the temperature
...
...