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Fermi-LAT observations of high-energy $\gamma$-ray emission toward the Galactic center

dc.contributor.authorAJELLO, M.
dc.contributor.authorALBERT, A.
dc.contributor.authorATWOOD, W.B.
dc.contributor.authorBARBIELLINI, G.
dc.contributor.authorBASTIERI, D.
dc.contributor.authorBECHTOL, K.
dc.contributor.authorBELLAZZINI, R.
dc.contributor.authorBISSALDI, E.
dc.contributor.authorBLANDFORD, R.D.
dc.contributor.authorBLOOM, E.D.
dc.contributor.authorBONINO, R.
dc.contributor.authorBOTTACINI, E.
dc.contributor.authorBRANDT, T.J.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorBREGEON, J.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorBRUEL, P.
dc.contributor.authorBUEHLER, R.
dc.contributor.authorBUSON, S.
dc.contributor.authorCALIANDRO, G.A.
dc.contributor.authorCAMERON, R.A.
dc.contributor.authorCAPUTO, R.
dc.contributor.authorCARAGIULO, M.
dc.contributor.authorCARAVEO, P.A.
dc.contributor.authorCECCHI, C.
dc.contributor.authorCHEKHTMAN, A.
dc.contributor.authorCHIANG, J.
dc.contributor.authorCHIARO, G.
dc.contributor.authorCIPRINI, S.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorCOHEN-TANUGI, Johann
dc.contributor.authorCOMINSKY, L.R.
dc.contributor.authorCONRAD, J.
dc.contributor.authorCUTINI, S.
dc.contributor.authorD'AMMANDO, F.
dc.contributor.authorDE ANGELIS, A.
dc.contributor.authorDE PALMA, F.
dc.contributor.authorDESIANTE, R.
dc.contributor.authorDI VENERE, L.
dc.contributor.authorDRELL, P.S.
dc.contributor.authorFAVUZZI, C.
dc.contributor.authorFERRARA, E.C.
dc.contributor.authorFUSCO, P.
dc.contributor.authorGARGANO, F.
dc.contributor.authorGASPARRINI, D.
dc.contributor.authorGIGLIETTO, N.
dc.contributor.authorGIOMMI, P.
dc.contributor.authorGIORDANO, F.
dc.contributor.authorGIROLETTI, M.
dc.contributor.authorGLANZMAN, T.
dc.contributor.authorGODFREY, G.
dc.contributor.authorGOMEZ-VARGAS, G.A.
hal.structure.identifierDépartement de Physique des Particules (ex SPP) [DPhP]
dc.contributor.authorGRENIER, I.A.
dc.contributor.authorGUIRIEC, S.
dc.contributor.authorGUSTAFSSON, M.
dc.contributor.authorHARDING, A.K.
dc.contributor.authorHEWITT, J.W.
dc.contributor.authorHILL, A.B.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorHORAN, D.
dc.contributor.authorJOGLER, T.
dc.contributor.authorJOHANNESSON, G.
dc.contributor.authorJOHNSON, A.S.
dc.contributor.authorKAMAE, T.
dc.contributor.authorKARWIN, C.
hal.structure.identifierInstitut de recherche en astrophysique et planétologie [IRAP]
hal.structure.identifierUniversité Toulouse III - Paul Sabatier [UT3]
dc.contributor.authorKNÖDLSEDER, J.
dc.contributor.authorKUSS, M.
dc.contributor.authorLARSSON, S.
dc.contributor.authorLATRONICO, L.
dc.contributor.authorLI, J.
dc.contributor.authorLI, L.
dc.contributor.authorLONGO, F.
dc.contributor.authorLOPARCO, F.
dc.contributor.authorLOVELLETTE, M.N.
dc.contributor.authorLUBRANO, P.
dc.contributor.authorMAGILL, J.
dc.contributor.authorMALDERA, S.
dc.contributor.authorMALYSHEV, D.
dc.contributor.authorMANFREDA, A.
dc.contributor.authorMAYER, M.
dc.contributor.authorMAZZIOTTA, M.N.
dc.contributor.authorMICHELSON, P.F.
dc.contributor.authorMITTHUMSIRI, W.
dc.contributor.authorMIZUNO, T.
dc.contributor.authorMOISEEV, A.A.
dc.contributor.authorMONZANI, M.E.
dc.contributor.authorMORSELLI, A.
dc.contributor.authorMOSKALENKO, I.V.
dc.contributor.authorMURGIA, S.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorNUSS, E.
dc.contributor.authorOHNO, M.
dc.contributor.authorOHSUGI, T.
dc.contributor.authorOMODEI, N.
dc.contributor.authorORLANDO, E.
dc.contributor.authorORMES, J.F.
dc.contributor.authorPANEQUE, D.
dc.contributor.authorPESCE-ROLLINS, M.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorPIRON, F.
dc.contributor.authorPIVATO, G.
dc.contributor.authorPORTER, T.A.
dc.contributor.authorRAINO, S.
dc.contributor.authorRANDO, R.
dc.contributor.authorRAZZANO, M.
dc.contributor.authorREIMER, A.
dc.contributor.authorREIMER, O.
dc.contributor.authorRITZ, S.
dc.contributor.authorSANCHEZ-CONDE, M.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorSAZ PARKINSON, P.M.
dc.contributor.authorSGRO, C.
dc.contributor.authorSISKIND, E.J.
dc.contributor.authorSMITH, D.A.
dc.contributor.authorSPADA, F.
dc.contributor.authorSPANDRE, G.
dc.contributor.authorSPINELLI, P.
dc.contributor.authorSUSON, D.J.
dc.contributor.authorTAJIMA, H.
dc.contributor.authorTAKAHASHI, H.
dc.contributor.authorTHAYER, J.B.
dc.contributor.authorTORRES, D.F.
dc.contributor.authorTOSTI, G.
dc.contributor.authorTROJA, E.
dc.contributor.authorUCHIYAMA, Y.
dc.contributor.authorVIANELLO, G.
dc.contributor.authorWINER, B.L.
dc.contributor.authorWOOD, K.S.
dc.contributor.authorZAHARIJAS, G.
dc.contributor.authorZIMMER, S.
dc.date.issued2016
dc.identifier.issn0004-637X
dc.description.abstractEnThe $Fermi$ Large Area Telescope (LAT) has provided the most detailed view to date of the emission toward the Galactic center (GC) in high-energy γ-rays. This paper describes the analysis of data taken during the first 62 months of the mission in the energy range 1–100 GeV from a 15° × 15° region about the direction of the GC. Specialized interstellar emission models (IEMs) are constructed to enable the separation of the γ-ray emissions produced by cosmic ray particles interacting with the interstellar gas and radiation fields in the Milky Way into that from the inner ∼1 kpc surrounding the GC, and that from the rest of the Galaxy. A catalog of point sources for the 15° × 15° region is self-consistently constructed using these IEMs: the First Fermi-LAT Inner Galaxy Point Source Catalog (1FIG). The spatial locations, fluxes, and spectral properties of the 1FIG sources are presented, and compared with γ-ray point sources over the same region taken from existing catalogs. After subtracting the interstellar emission and point-source contributions a residual is found. If templates that peak toward the GC are used to model the positive residual the agreement with the data improves, but none of the additional templates tried account for all of its spatial structure. The spectrum of the positive residual modeled with these templates has a strong dependence on the choice of IEM.
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.subject.encosmic rays
dc.subject.enGalaxy: center
dc.subject.engamma-rays: general
dc.subject.engamma-rays: ISM
dc.subject.enradiation mechanisms: non-thermal
dc.subject.engamma ray: emission
dc.subject.enemission: model
dc.subject.enparticle: interaction
dc.subject.enelectron: interaction
dc.subject.engalaxy
dc.subject.enGLAST
dc.subject.engas
dc.subject.encosmic radiation
dc.subject.enbackground
dc.subject.enscattering
dc.subject.enstructure
dc.subject.ennucleus
dc.subject.enflux
dc.title.enFermi-LAT observations of high-energy $\gamma$-ray emission toward the Galactic center
dc.typeArticle de revue
dc.identifier.doi10.3847/0004-637X/819/1/44
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE]
dc.identifier.arxiv1511.02938
bordeaux.journalThe Astrophysical Journal
bordeaux.page44
bordeaux.volume819
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-02017039
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02017039v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20Journal&rft.date=2016&rft.volume=819&rft.issue=1&rft.spage=44&rft.epage=44&rft.eissn=0004-637X&rft.issn=0004-637X&rft.au=AJELLO,%20M.&ALBERT,%20A.&ATWOOD,%20W.B.&BARBIELLINI,%20G.&BASTIERI,%20D.&rft.genre=article


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