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Etalonnage sol et analyse des données de l'expérience ballon Archeops mesurant les anisotropies du Fond Diffus Cosmologique. Etude des contraintes sur l'inflation

Abstract : Archeops, a balloon-borne experiment, has mapped the Cosmic Microwave Background anisotropies at high angular resolution ~ 10 arcminutes on a large fraction of the sky of 30%. Archeops is a benchmark for the HFI instrument of the Planck satellite mission of the ESA.
This thesis deals with the ground calibration using a millimetric thermal source for the three flights performed by Archeops and with their data analysis. The main steps of the process of the time ordered data are discussed: flagging of the corrupted data, subtraction of systematics at low frequency and at high frequency. For the latter, an original method is proposed which helps some of the detectors to satisfy the hypothesis of stationnarity and gaussianity requested by the map making codes. Solutions given by three of these codes are compared using simulations.
The angular power spectrum of the anisotropies constraints the parameters of the standard cosmological model, and hence, the physical parameters of the considered inflationnary model that generates the primordial perturbation imprinted in the anisotropies. This thesis shows what would be the Archeops contribution to this topic.
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https://tel.archives-ouvertes.fr/tel-00001764
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Submitted on : Friday, October 4, 2002 - 10:47:25 AM
Last modification on : Thursday, November 19, 2020 - 12:58:41 PM
Long-term archiving on: : Friday, April 2, 2010 - 8:00:31 PM

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  • HAL Id : tel-00001764, version 1

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LPSC | CNRS | IN2P3 | GEPI | UGA

Citation

Philippe Filliatre. Etalonnage sol et analyse des données de l'expérience ballon Archeops mesurant les anisotropies du Fond Diffus Cosmologique. Etude des contraintes sur l'inflation. Astrophysique [astro-ph]. Institut National Polytechnique de Grenoble - INPG, 2002. Français. ⟨tel-00001764⟩

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