2005A&A...436..785T

Query : 2005A&A...436..785T

2005A&A...436..785T - Astronomy and Astrophysics, volume 436, 785-797 (2005/6-4)

The CMB temperature power spectrum from an improved analysis of the Archeops data.

TRISTRAM M., PATANCHON G., MACIAS-PEREZ J.F., ADE P., AMBLARD A., ANSARI R., AUBOURG E., BENOIT A., BERNARD J.-P., BLANCHARD A., BOCK J.J., BOUCHET F.R., BOURRACHOT A., CAMUS P., CARDOSO J.-F., COUCHOT F., DE BERNARDIS P., DELABROUILLE J., DESERT F.-X., DOUSPIS M., DUMOULIN L., FILLIATRE P., FOSALBA P., GIARD M., GIRAUD-HERAUD Y., GISPERT R., GUGLIELMI L., HAMILTON J.-C., HANANY S., HENROT-VERSILLE S., KAPLAN J., LAGACHE G., LAMARRE J.-M., LANGE A.E., MADET K., MAFFEI B., MAGNEVILLE C., MASI S., MAYET F., NATI F., PERDEREAU O., PLASZCZYNSKI S., PIAT M., PONTHIEU N., PRUNET S., RENAULT C., ROSSET C., SANTOS D., VIBERT D. and YVON D.

Abstract (from CDS):

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 A⁴⁴Sc rcheops flight. This refined analysis is obtained by using the 6 most sensitive photometric pixels in the CMB bands centered at 143 and 217GHz 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 W⁴⁴Sc map first year results.

Abstract Copyright: ∼

Journal keyword(s): cosmology: cosmic microwave background - cosmology: observations - methodes: data analysis

Simbad objects: 2

Full paper

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Number of rows : 2

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2024	#notes
1	NAME Taurus Complex	SFR	04 41.0	+25 52						~	4415	0
2	NAME Gal Anticenter	reg	05 46	+28.9						~	911	0

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