# Planck CMB anomalies: astrophysical and cosmological secondary effects and the curse of masking

@article{Rassat2014PlanckCA, title={Planck CMB anomalies: astrophysical and cosmological secondary effects and the curse of masking}, author={Ana{\"i}s Rassat and J-L. Starck and Paniez Paykari and Florent Sureau and J{\'e}r{\^o}me Bobin}, journal={Journal of Cosmology and Astroparticle Physics}, year={2014}, volume={2014}, pages={006 - 006} }

Large-scale anomalies have been reported in CMB data with both WMAP and Planck data. These could be due to foreground residuals and or systematic effects, though their confirmation with Planck data suggests they are not due to a problem in the WMAP or Planck pipelines. If these anomalies are in fact primordial, then understanding their origin is fundamental to either validate the standard model of cosmology or to explore new physics. We investigate three other possible issues: 1) the trade-off…

## 35 Citations

### Cosmic microwave background reconstruction from WMAP and Planck PR2 data

- Physics
- 2016

We describe a new estimate of the cosmic microwave background (CMB) intensity map reconstructed by a joint analysis of the full Planck 2015 data (PR2) and nine years of WMAP data. The proposed map…

### Explaining cosmological anisotropy: evidence for causal horizons from CMB data

- Physics
- 2020

The origin of power asymmetry and other measures of statistical anisotropy on the largest scales of the universe, as manifested in Cosmic Microwave Background (CMB) and large-scale structure data, is…

### CMB reconstruction from the WMAP and Planck PR2 data

- Physics
- 2015

In this article, we describe a new estimate of the Cosmic Microwave Background (CMB) intensity map reconstructed by a joint analysis of the full Planck 2015 data (PR2) and WMAP nine-years. It…

### Mapping possible non-Gaussianity in the Planck maps

- Physics
- 2015

[Abridged.] It is conceivable that no single statistical estimator can be sensitive to all forms and levels of non-Gaussianity that may be present in observed CMB data. In recent works a statistical…

### On the significance of power asymmetries in Planck CMB data at all scales

- Physics
- 2014

We perform an analysis of the CMB temperature data taken by the Planck satellite investigating if there is any significant deviation from cosmological isotropy. We look for differences in the…

### North-South non-Gaussian asymmetry in Planck CMB maps

- Physics
- 2014

We report the results of a statistical analysis performed with the four foreground-cleaned Planck maps by means of a suitably defined local-variance estimator. Our analysis shows a clear dipolar…

### Influence of Planck foreground masks in the large angular scale quadrant CMB asymmetry

- Physics
- 2015

The measured CMB angular distribution shows a great consistency with the LCDM model. However, isotropy violations were reported in CMB temperature maps of both WMAP and Planck data. We investigate…

### PROBING THE ISOTROPY OF COSMIC ACCELERATION TRACED BY TYPE Ia SUPERNOVAE

- Physics
- 2015

We present a method to test the isotropy of the magnitude–redshift relation of Type Ia Supernovae (SNe Ia) and single out the most discrepant direction (in terms of the signal-to-noise ratio) with…

### Limits on entanglement effects in the string landscape from Planck and BICEP/Keck data

- Physics
- 2016

We consider observational limits on a proposed model of the string landscape in inflation. In this scenario, effects from the decoherence of entangled quantum states in long-wavelength modes in the…

### Large scale CMB anomalies from thawing cosmic strings

- Physics
- 2015

Cosmic strings formed during inflation are expected to be either diluted over super-Hubble distances, i.e., invisible today, or to have crossed our past light cone very recently. We discuss the…

## References

SHOWING 1-10 OF 104 REFERENCES

### On preferred axes in WMAP cosmic microwave background data after subtraction of the integrated Sachs-Wolfe effect

- Physics
- 2013

There is currently a debate over the existence of claimed statistical anomalies in the cosmic microwave background (CMB), recently confirmed in Planck data. Recent work has focussed on methods for…

### Assessing the effects of foregrounds and sky removal in WMAP

- Physics
- 2004

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…

### Planck2013 results. XXIII. Isotropy and statistics of the CMB

- PhysicsAstronomy & Astrophysics
- 2014

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…

### First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Foreground Emission

- Physics
- 2003

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…

### SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP ) OBSERVATIONS: ARE THERE COSMIC MICROWAVE BACKGROUND ANOMALIES?

- Physics
- 2011

A simple six-parameter ΛCDM model provides a successful fit to WMAP data. This holds both when the WMAP data are analyzed alone or in combination with other cosmological data. Even so, it is…

### Measuring the integrated Sachs-Wolfe effect

- Computer Science
- 2010

A novel method based on sparse inpainting and bootstrapping, which accurately detects and reconstructs the ISW effect and finds that detection levels are independent from whether the galaxy field is normally or lognormally distributed.

### North-South non-Gaussian asymmetry in Planck CMB maps

- Physics
- 2014

We report the results of a statistical analysis performed with the four foreground-cleaned Planck maps by means of a suitably defined local-variance estimator. Our analysis shows a clear dipolar…

### Lack of large-angle TT correlations persists in WMAP and Planck

- Physics
- 2015

The lack of large-angle correlations in the observed microwave backgroundtemperature fluctuations persists in the final-year maps from WMAP and thefirst cosmological data release from Planck. We find…

### On the CMB large-scales angular correlations

- Physics
- 2006

. 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 sphere,…

### Low‐order multipole maps of cosmic microwave background anisotropy derived from WMAP

- Environmental Science
- 2004

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…