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Astronomie gamma depuis le sol et l’espace : premières analyses du réseau hybride HESS-II et recherche de candidats blazars parmi les sources non-identifiées du Fermi-LAT

Abstract : This manuscript is about high energy gamma-ray astronomy (between ~30 GeV and ~300 GeV) with the Fermi-LAT satellite and very high energy gamma-ray astronomy (above ~100GeV) via the H.E.S.S. experiment. The second phase of the H.E.S.S. experiment began in July 2012 with the inauguration of a fifth 28m-diameter telescope added to the intial array composed of four 12m-diameter imaging atmospheric Cherenkov telescopes. In the first part of this thesis, we present the development of an analysis in hybrid mode based on a multivariate method dedicated to detect and study sources with different spectral shapes and the first analysis results on real data. The second part is dedicated to the research of blazar candidates among the Fermi-LAT unidentified sources of the 2FGL catalog. A first development is based on a multivariate approach using discriminant parameters built with the 2FGL catalog parameters. A second development is done with the use of the WISE satellite catalog and a non-parametric technic in order to find the blazar-like infrared counterparts of the unidentified sources of the 2FGL catalog.
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https://tel.archives-ouvertes.fr/tel-01128429
Contributor : Julien Lefaucheur <>
Submitted on : Monday, June 1, 2015 - 5:20:33 PM
Last modification on : Wednesday, October 21, 2020 - 4:32:15 PM
Long-term archiving on: : Friday, May 5, 2017 - 12:23:24 PM

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Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives 4.0 International License

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  • HAL Id : tel-01128429, version 2

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Julien Lefaucheur. Astronomie gamma depuis le sol et l’espace : premières analyses du réseau hybride HESS-II et recherche de candidats blazars parmi les sources non-identifiées du Fermi-LAT. Physique [physics]. UNIVERSITÉ PARIS DIDEROT SORBONNE PARIS CITÉ (Paris 7), 2015. Français. ⟨tel-01128429v2⟩

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