J/A+A/557/L1 WMAP cosmic microwave background data (Rassat+, 2013)
On preferred axes in WMAP cosmic microwave background data after subtraction of
the integrated Sachs-Wolfe effect.
Rassat A., Starck J.-L.
<Astron. Astrophys. 557, L1 (2013)>
=2013A&A...557L...1R 2013A&A...557L...1R
ADC_Keywords: Radio sources ; Infrared sources
Keywords: cosmic background radiation - cosmology: observations -
early Universe - large-scale structure of Universe -
cosmology: theory - dark energy
Abstract:
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 measuring
statistical significance, on masks and on secondary anisotropies as
potential causes of the anomalies. We investigate simultaneously the
method for accounting for masked regions and the foreground integrated
Sachs-Wolfe (ISW) signal. We search for trends in different years of
WMAP CMB data with different mask treatments. We reconstruct the ISW
field due to the 2 Micron All-Sky Survey (2MASS) and the NRAO VLA Sky
Survey (NVSS) up to l=5, and we focus on the Axis of Evil (AoE)
statistic and even/odd mirror parity, both of which search for
preferred axes in the Universe. We find that removing the ISW reduces
the significance of these anomalies in WMAP data, though this does not
exclude the possibility of exotic physics. In the spirit of
reproducible research, all reconstructed maps and codes will be made
available for download at http://www.cosmostat.org/anomaliesCMB.html .
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 159 26 List of reconstructed maps and codes
fits/* . 21 Individual fits maps
codes/* . 5 Individual codes
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
http://www.cosmostat.org/anomaliesCMB.html : Home Page
Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 4 I4 pix Nx [8192]? Map size along x-axis (1)
5 A1 --- --- [x]
6- 9 I4 pix Ny [192/8192]? Map size along y-axis (1)
11- 25 A15 --- Products Products
27- 97 A71 --- Title Title of the file
99-159 A61 --- FileName FileName
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Note (1): size is given for FITS files only.
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History:
Copied at http://www.cosmostat.org/anomaliesCMB.html
(End) Patricia Vannier [CDS] 12-Aug-2013