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}
}
View PDF on arXiv
53 Citations
Highly Influential Citations
4
Background Citations
15
Methods Citations
5
Results Citations
1

Figures and Tables from this paper

53 Citations

Citation Type

Citation Type

Can we detect hot/cold spots in the CMB with Minkowski Functionals?
In this paper, we investigate the utility of Minkowski Functionals as a probe of cold/hot disk-like structures in the CMB. In order to construct an accurate estimator, we resolve a long-standing…
A comprehensive overview of the Cold Spot
The report of a significant deviation of the CMB temperature anisotropies distribution from Gaussianity (soon after the public release of the WMAP data in 2003) has become one of the most solid WMAP…
Local properties of Wilkinson Microwave Anisotropy Probe cold spot
We investigate the local properties of WMAP Cold Spot (CS) by defining the local statistics: mean temperature, variance, skewness and kurtosis. We find that, compared with the \emph{coldest spots} in…
Planck 2015 results. XVI. 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…
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…
CMB polarization as a probe of the anomalous nature of the Cold Spot
One of the most interesting explanations for the non-Gaussian Cold Spot detected in the WMAP data by Vielva et al. (2004), is that it arises from the interaction of the CMB radiation with a cosmic…
Evidence against a supervoid causing the CMB Cold Spot
We report the results of the 2dF-VST ATLAS Cold Spot galaxy redshift survey (2CSz) based on imaging from VST ATLAS and spectroscopy from 2dF AAOmega over the core of the CMB Cold Spot. We sparsely…
Probing supervoids with weak lensing
The cosmic microwave background (CMB) has non-Gaussian features in the temperature fluctuations. An anomalous cold spot surrounded with a hot ring, called the Cold Spot is one of such features. If a…
A POSSIBLE COLD IMPRINT OF VOIDS ON THE MICROWAVE BACKGROUND RADIATION
We measure the average temperature decrement on the cosmic microwave background (CMB) produced by voids selected in the Sloan Digital Sky Survey Data Release 7 spectroscopic redshift galaxy catalog,…
The cosmic microwave background Cold Spot anomaly: the impact of sky masking and the expected contribution from the integrated Sachs-Wolfe effect
We re-analyse the cosmic microwave background (CMB) Cold Spot (CS) anomaly with particular focus on understanding the bias a mask (contaminated by Galactic and point sources) may introduce. We…
...
1
2
3
4
5
...

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…
...
1
2
3
4
5
...