Disks in the sky: A reassessment of the WMAP “cold spot”

@article{Zhang2010DisksIT,
  title={Disks in the sky: A reassessment of the WMAP “cold spot”},
  author={Rachel C. Zhang and D. Huterer},
  journal={Astroparticle Physics},
  year={2010},
  volume={33},
  pages={69-74}
}
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References

SHOWING 1-10 OF 75 REFERENCES
The non-Gaussian cold spot in WMAP
Extragalactic Radio Sources and the WMAP Cold Spot
We detect a dip of 20%-45% in the surface brightness and number counts of NRAO VLA Sky Survey (NVSS) sources smoothed to a few degrees at the location of the WMAP cold spot. The dip has structure on…
The non‐Gaussian cold spot in Wilkinson Microwave Anisotropy Probe: significance, morphology and foreground contribution
The non–Gaussian cold spot in the 1–year WMAP data, described in Vielva et al. and Cruz et al., is analysed in detail in the present paper. First of all, we perform a more rigorous calculation of the…
Understanding the WMAP Cold Spot mystery
The Cold Spot (CS) at galactic coordinates (b = −57°, l = 209°) was discovered in the Wilkinson Microwave Anisotropy Probe (WMAP)data as a cosmic background anomaly. In order to assess the…
Detection of a non‐Gaussian spot in WMAP
An extremely cold and big spot in the Wilkinson Microwave Anisotropy Probe (WMAP) 1-yr data is analysed. Our work is a continuation of a previous paper by Vielva et al. that reported the detection of…
No evidence for the cold spot in the NVSS radio survey
We revisit recent claims that there is a ‘cold spot’ in both number counts and brightness of radio sources in the NRAO (National Radio Astronomy Observatory) VLA (Very Large Array) Sky Survey (NVSS),…
Non-Gaussian signatures in the five-year WMAP data as identified with isotropic scaling indices
We continue the analysis of non-Gaussianities in the cosmic microwave background by means of the scaling index method by applying this method on the single Q, V, W bands and the co-added VW band of…
Wavelets and WMAP non-Gaussianity
We study the statistical properties of the first-year Wilkinson Microwave Anisotropy Probe (WMAP) data on different scales using the spherical Mexican hat wavelet transform. Consistent with the 2004…
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–year data, is detected again in the coadded WMAP 3–year data at the same position (b = 57 ◦ ,l = 209 ◦ ) and size in the sky (� 10 ◦…
On the cosmic microwave background large-scale angular correlations
Aims. We study the large-scale angular correlation signatures of the cosmic microwave background (CMB) temperature fluctuations from WMAP data in several spherical cap regions of the celestial…
...
...