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    The cosmic microwave background anisotropy power spectrum measured by Archeops


    Benoit, A. and Ade, P.A.R. and Amblard, A. and Ansari, R. and Aubourg, É. and Bargot, S. and Bartlett, J.G. and Bernard, J.-P. and Bhatia, R. and Blanchard, A. and Bock, J.J. and Boscaleri, A. and Bouchet, F.R. and Bourrachot, A. and Camus, P. and Couchot, F. and De Bernardis, P. and Delabrouille, J. and Desert, F.-X. and Dore, O. and Douspis, M. and Dumoulin, L. and Dupac, X. and Filliatre, P. and Fosalba, P. and Ganga, K. and Guglielmi, L. and Hamilton, J.-Ch. and Hanany, S. and Henrot-Versille, S. and Kaplan, J. and Lagache, G. and Lamarre, J.-M. and Lange, A.E. and Macias-Perez, J.F. and Madet, K. and Maffei, B. and Magneville, Ch. and Marrone, D.P. and Masi, S. and Mayet, F. and Murphy, J.Anthony and Naraghi, F. and Nati, F. and Patanchon, G. and Perrin, G. and Piat, M. and Ponthieu, N. and Prunet, S. and Puget, J.-L. and Renault, C. and Rosset, C. and Santos, D. and Starobinsky, Alexei A. and Strukov, I. and Sudiwala, R. and Teyssier, R. and Tristram, M. and Tucker, C. and Vanel, J.-C. and Vibert, D. and Wakui, E. and Yvon, D. (2003) The cosmic microwave background anisotropy power spectrum measured by Archeops. Astronomy & Astrophysics, 399 (3). L19-L23. ISSN 0004-6361

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    Abstract

    We present a determination by the Archeops experiment of the angular power spectrum of the cosmic microwave background anisotropy in 16 bins over the multipole range . Archeops was conceived as a precursor of the Planck HFI instrument by using the same optical design and the same technology for the detectors and their cooling. Archeops is a balloon–borne instrument consisting of a 1.5 m aperture diameter telescope and an array of 21 photometers maintained at mK that are operating in 4 frequency bands centered at 143, 217, 353 and 545 GHz. The data were taken during the Arctic night of February 7, 2002 after the instrument was launched by CNES from Esrange base (Sweden). The entire data cover ~30% of the sky. This first analysis was obtained with a small subset of the dataset using the most sensitive photometer in each CMB band (143 and 217 GHz) and 12.6% of the sky at galactic latitudes above 30 degrees where the foreground contamination is measured to be negligible. The large sky coverage and medium resolution (better than 15 arcmin) provide for the first time a high signal-to-noise ratio determination of the power spectrum over angular scales that include both the first acoustic peak and scales probed by COBE/DMR. With a binning of to 25 the error bars are dominated by sample variance for below 200. A companion paper details the cosmological implications.

    Item Type: Article
    Keywords: cosmic microwave background; cosmology: observations; submillimeter;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 14023
    Identification Number: https://doi.org/10.1051/0004-6361:20021850
    Depositing User: Dr. Anthony Murphy
    Date Deposited: 16 Feb 2021 15:03
    Journal or Publication Title: Astronomy & Astrophysics
    Publisher: EDP Sciences
    Refereed: Yes
    URI:

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