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Comptes Rendus Physique
Volume 4, n° 8
pages 853-859 (octobre 2003)
Doi : 10.1016/j.crhy.2003.09.006
Archeops results

Jean-Christophe  Hamilton abc * ,  Alain  Benoit d the Archeops collaboration 1
aLPNHE (CNRS-IN2P3), Paris VI & VII, 4, place Jussieu, 75252 Paris cedex 05, France 
bLPSC (CNRS-IN2P3), 53, avenue des Martyrs, 38026 Grenoble cedex, France 
cPCC (CNRS-IN2P3), 11, place Marcelon Berthelot, 75231 Paris cedex 05, France 
dCRTBT (CNRS), 25, avenue des Martyrs, BP 166, 38042 Grenoble cedex 9, France 

*Corresponding author.
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Archeops is a balloon-borne instrument, dedicated to measuring cosmic microwave background (CMB) temperature anisotropies at high angular resolution ( 12 arcmin.) over a large fraction (30%) of the sky in the (sub)millimetre domain (from 143 to 545 GHz). We describe the results obtained during the last flight: the Archeops estimate of the CMB angular power spectrum, linking for the first time Cobe scales and the first acoustic peak, consequences in terms of cosmological parameters favouring a flat-  Universe. We also present the first measurement of galactic dust polarization and accurate maps of the galactic plane diffuse (sub) millimetre emisson. To cite this article: J.-C. Hamilton et al., C. R. Physique 4 (2003).

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Archeops est une expérience ballon destinée à mesurer les anisotropies du fond diffus cosmologique (CMB) avec une haute résolution angulaire ( 12 arcmin.) sur une large fraction du ciel ( ) dans le domaine (sub)millimetrique (de 143 à 545 GHz). Nous décrivons les résultats obtenus durant le dernier vol : la mesure du spectre de puissance angulaire des anisotropies du CMB reliant pour la première fois les échelles de Cobe avec le premier pic acoustique, les conséquences en termes de paramètres cosmologiques qui favorisent un Univers plat dominé par une constante cosmologique. Nous présentons aussi la première détection de polarisation des poussières galactiques ainsi que des cartes précises de l'émission diffuse (sub)millimetrique du plan galactique. Pour citer cet article : J.-C. Hamilton et al., C. R. Physique 4 (2003).

Mots clés  : Cosmic Microwave Background anisotropies ; Cosmology ; Early Universe.

Mots clés  : Anisotropies du fond de rayonnement cosmique ; Cosmologie ; Univers primordial.


1  http://www.archeops.org




© 2003  Académie des sciences@@#104156@@

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