The CMB temperature power spectrum from an improved analysis of the Archeops data
Abstract
We present improved results on the measurement of the angular power spectrum of the Cosmic Microwave Background (CMB) temperature anisotropies using the data from the last Archeops flight. This refined analysis is obtained by using the 6 most sensitive photometric pixels in the CMB bands centered at 143 and 217 GHz and 20% of the sky, mostly clear of foregrounds. Using two different cross-correlation methods, we obtain very similar results for the angular power spectrum. Consistency checks are performed to test the robustness of these results paying particular attention to the foreground contamination level which remains well below the statistical uncertainties. The multipole range from l=10 to l=700 is covered with 25 bins, confirming strong evidence for a plateau at large angular scales (the Sachs-Wolfe plateau) followed by two acoustic peaks centered around l=220 and l=550 respectively. These data provide an independent confirmation, obtained at different frequencies, of the WMAP first year results.
Cite
@article{arxiv.astro-ph/0411633,
title = {The CMB temperature power spectrum from an improved analysis of the Archeops data},
author = {M. Tristram and G. Patanchon and J. F. Macias-Perez and P. Ade and A. Amblard and R. Ansari and E. Aubourg and A. Benoit and J. -Ph. Bernard and A. Blanchard and J. J. Bock and F. R. Bouchet and A. Bourrachot and P. Camus and J. -F. Cardoso and F. Couchot and P. de Bernardis and J. Delabrouille and F. -X. Desert and M. Douspis and L. Dumoulin and Ph. Filliatre and P. Fosalba and M. Giard and Y. Giraud-Heraud and R. Gispert and L. Guglielmi and J. -Ch. Hamilton and S. Hanany and S. Henrot-Versille and J. Kaplan and G. Lagache and J. -M. Lamarre and A. E. Lange and K. Madet and B. Maffei and Ch. Magneville and S. Masi and F. Mayet and F. Nati and O. Perdereau and S. Plaszczynski and M. Piat and N. Ponthieu and S. Prunet and C. Renault and C. Rosset and D. Santos and D. Vibert and D. Yvon},
journal= {arXiv preprint arXiv:astro-ph/0411633},
year = {2009}
}
Comments
14 pages, 16 figures, A&A