Publications (23)
Unexplained correlation between the Cosmic Microwave Background temperature and the local matter density distribution
M. Cruz, E. MartÃnez-González, C. Gimeno-Amo +2
Recent observations have indicated a Cosmic Microwave Background (CMB) temperature decrement in the direction of local galaxies within the 2MASS Redshift Survey. We investigate thi…
CMB polarization as a probe of the anomalous nature of the Cold Spot
P. Vielva, E. Martinez-Gonzalez, M. Cruz +2
One of the most interesting explanations for the non-Gaussian Cold Spot (CS) detected in the WMAP data by Vielva et al. 2004, is that it arises from the interaction of the CMB radi…
Planck 2013 results. II. Low Frequency Instrument data processing
Planck Collaboration, N. Aghanim, C. Armitage-Caplan +229
We describe the data processing pipeline of the Planck Low Frequency Instrument (LFI) data processing centre (DPC) to create and characterize full-sky maps based on the first 15.5…
Planck Early Results. V. The Low Frequency Instrument data processing
A. Zacchei, D. Maino, C. Baccigalupi +146
We describe the processing of data from the Low Frequency Instrument (LFI) used in production of the Planck Early Release Compact Source Catalogue (ERCSC). In particular, we discus…
The CMB cold spot: texture, cluster or void?
M. Cruz, E. Martinez-Gonzalez, P. Vielva +3
The non-Gaussian cold spot found in the WMAP data has created controversy about its origin. Here we calculate the Bayesian posterior probability ratios for three different models t…
Planck 2013 results. III. LFI systematic uncertainties
Planck Collaboration, N. Aghanim, C. Armitage-Caplan +217
We present the current estimate of instrumental and systematic effect uncertainties for the Planck-Low Frequency Instrument relevant to the first release of the Planck cosmological…
A Cosmic Microwave Background feature consistent with a cosmic texture
M. Cruz, N. Turok, P. Vielva +2
The Cosmic Microwave Background provides our most ancient image of the Universe and our best tool for studying its early evolution. Theories of high energy physics predict the form…
Planck 2013 results. I. Overview of products and scientific results
Planck Collaboration, P. A. R. Ade, N. Aghanim +398
The ESA's Planck satellite, dedicated to studying the early Universe and its subsequent evolution, was launched 14 May 2009 and has been scanning the microwave and submillimetre sk…
Planck 2013 results. XII. Component separation
Planck Collaboration, P. A. R. Ade, N. Aghanim +252
Planck has produced detailed all-sky observations over nine frequency bands between 30 and 857 GHz. These observations allow robust reconstruction of the primordial cosmic microwav…
Detection of a non-Gaussian Spot in WMAP
M. Cruz, E. Martinez-Gonzalez, P. Vielva +1
An extremely cold and big spot in the WMAP 1-year data is analyzed. Our work is a continuation of a previous paper (Vielva et al. 2004) where non-Gaussianity was detected, with a m…
Using CMB polarization to constrain the anomalous nature of the Cold Spot with an incomplete sky-coverage
R. Fernández-Cobos, P. Vielva, E. MartÃnez-González +2
Recent results of the ESA Planck satellite have confirmed the existence of some anomalies in the statistical distribution of the cosmic microwave background (CMB) anisotropies. One…
Bianchi VII_h models and the cold spot texture
M. Bridges, J. D. McEwen, M. Cruz +4
We have returned to our previous Bianchi VII_h analysis in light of the Cruz et al. 2007 suggestion that the cold spot observed near the southern Galactic pole may be a remnant tem…
WMAP anomalous signal in the ecliptic plane
J. M Diego, M. Cruz, J. Gonzalez-Nuevo +3
We report the detection of a high Galactic latitude, large scale, 7-sigma signal in WMAP 5yr and spatially correlated with the ecliptic plane. Two possible candidates are studied,…
Planck early results. III. First assessment of the Low Frequency Instrument in-flight performance
A. Mennella, M. Bersanelli, R. C. Butler +158
The scientific performance of the Planck Low Frequency Instrument (LFI) after one year of in-orbit operation is presented. We describe the main optical parameters and discuss photo…
The non-Gaussian Cold Spot in the 3-year WMAP data
M. Cruz, L. Cayon, E. Martinez-Gonzalez +2
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…
Planck 2015 results. XVI. Isotropy and statistics of the CMB
Planck Collaboration, P. A. R. Ade, N. Aghanim +242
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…
Planck 2015 results. III. LFI systematic uncertainties
Planck Collaboration, P. A. R. Ade, J. Aumont +166
We present the current accounting of systematic effect uncertainties for the Low Frequency Instrument (LFI) that are relevant to the 2015 release of the Planck cosmological results…
Square Kilometre Array Science Data Challenge 3a: foreground removal for an EoR experiment
A. Bonaldi, P. Hartley, R. Braun +179
We present and analyse the results of the Science data challenge 3a (SDC3a, https://sdc3.skao.int/challenges/foregrounds), an EoR foreground-removal community-wide exercise organis…
Anomalous variance in the WMAP data and Galactic Foreground residuals
M. Cruz, P. Vielva, E. MartÃnez-González +1
A previous work (MonteserÃn et al. 2008) estimated the CMB variance from the three-year WMAP data, finding a lower value than expected from Gaussian simulations using the WMAP bes…
The WMAP cold spot
M. Cruz, E. Martinez-Gonzalez, P. Vielva
The WMAP cold spot was found by applying spherical wavelets to the first year WMAP data. An excess of kurtosis of the wavelet coefficient was observed at angular scales of around 5…
Planck 2015 results. I. Overview of products and scientific results
Planck Collaboration, R. Adam, P. A. R. Ade +352
The European Space Agency's Planck satellite, dedicated to studying the early Universe and its subsequent evolution, was launched 14~May 2009 and scanned the microwave and submilli…
Planck 2013 results. XXIII. Isotropy and statistics of the CMB
Planck Collaboration, P. A. R. Ade, N. Aghanim +252
The two fundamental assumptions of the standard cosmological model - that the initial fluctuations are statistically isotropic and Gaussian - are rigorously tested using maps of th…
The non-Gaussian Cold Spot in WMAP: significance, morphology and foreground contribution
M. Cruz, M. Tucci, E. Martinez-Gonzalez +1
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 rigorou…