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The Fermi-LAT high-latitude Survey: Source Count Distributions and the Origin of the Extragalactic Diffuse Background

dc.contributor.authorA. ABDO, A.
dc.contributor.authorACKERMANN, Markus
dc.contributor.authorAJELLO, Marco
dc.contributor.authorANTOLINI, E.
dc.contributor.authorBALDINI, Luca
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorBALLET, Jean
dc.contributor.authorBARBIELLINI, Guido
dc.contributor.authorBASTIERI, D.
dc.contributor.authorM. BAUGHMAN, B.
dc.contributor.authorBECHTOL, K.
dc.contributor.authorBELLAZZINI, R.
dc.contributor.authorBERENJI, B.
dc.contributor.authorD. BLANDFORD, R.
dc.contributor.authorD. BLOOM, E.
dc.contributor.authorBONAMENTE, E.
dc.contributor.authorW. BORGLAND, A.
dc.contributor.authorBOUVIER, A.
dc.contributor.authorBREGEON, J.
dc.contributor.authorBREZ, A.
dc.contributor.authorBRIGIDA, M.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorBRUEL, Pascal
dc.contributor.authorH. BURNETT, T.
dc.contributor.authorBUSON, S.
dc.contributor.authorA. CALIANDRO, G.
dc.contributor.authorA. CAMERON, R.
dc.contributor.authorCARAVEO, P. A.
dc.contributor.authorCARRIGAN, S.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorM. CASANDJIAN, J.
dc.contributor.authorCAVAZZUTI, E.
dc.contributor.authorCECCHI, C.
dc.contributor.authorCELIK, O.
dc.contributor.authorCHARLES, E.
dc.contributor.authorCHEKHTMAN, A.
dc.contributor.authorC. CHEUNG, C.
dc.contributor.authorCHIANG, J.
dc.contributor.authorCIPRINI, S.
dc.contributor.authorCLAUS, R.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorCOHEN-TANUGI, J.
dc.contributor.authorCONRAD, J.
dc.contributor.authorCOSTAMANTE, L.
dc.contributor.authorCUTINI, S.
dc.contributor.authorD. DERMER, C.
dc.contributor.authorDE ANGELIS, A.
dc.contributor.authorDE PALMA, F.
dc.contributor.authorDO COUTO E SILVA, E.
dc.contributor.authorS. DRELL, P.
dc.contributor.authorDUBOIS, R.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorDUMORA, D.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorFARNIER, C.
dc.contributor.authorFAVUZZI, C.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorJ. FEGAN, S.
dc.contributor.authorB. FOCKE, W.
dc.contributor.authorFUKAZAWA, Y.
dc.contributor.authorFUNK, S.
dc.contributor.authorFUSCO, P.
dc.contributor.authorGARGANO, F.
dc.contributor.authorGASPARRINI, D.
dc.contributor.authorGEHRELS, N.
dc.contributor.authorGERMANI, S.
dc.contributor.authorGIGLIETTO, N.
dc.contributor.authorGIOMMI, P.
dc.contributor.authorGIORDANO, F.
dc.contributor.authorGLANZMAN, T.
dc.contributor.authorGODFREY, G.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorA. GRENIER, I.
dc.contributor.authorE. GROVE, J.
dc.contributor.authorGUIRIEC, S.
dc.contributor.authorHADASCH, D.
dc.contributor.authorHAYASHIDA, M.
dc.contributor.authorHAYS, E.
dc.contributor.authorE. HEALEY, S.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorHORAN, D.
dc.contributor.authorE. HUGHES, R.
dc.contributor.authorITOH, R.
dc.contributor.authorJOHANNESSON, G.
dc.contributor.authorS. JOHNSON, A.
dc.contributor.authorJ. JOHNSON, T.
dc.contributor.authorN. JOHNSON, W.
dc.contributor.authorKAMAE, T.
dc.contributor.authorKATAGIRI, H.
dc.contributor.authorKATAOKA, J.
dc.contributor.authorKAWAI, N.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorKNÖDLSEDER, Jürgen
dc.contributor.authorKUSS, M.
dc.contributor.authorLANDE, J.
dc.contributor.authorLATRONICO, L.
dc.contributor.authorLEE, S.-H.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorLEMOINE-GOUMARD, M.
dc.contributor.authorLLENA GARDE, M.
dc.contributor.authorLONGO, F.
dc.contributor.authorLOPARCO, F.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorLOTT, B.
dc.contributor.authorN. LOVELLETTE, M.
dc.contributor.authorLUBRANO, P.
dc.contributor.authorM. MADEJSKI, G.
dc.contributor.authorMAKEEV, A.
dc.contributor.authorN. MAZZIOTTA, M.
dc.contributor.authorMCCONVILLE, W.
dc.contributor.authorE. MCENERY, J.
dc.contributor.authorMEURER, C.
dc.contributor.authorF. MICHELSON, P.
dc.contributor.authorMITTHUMSIRI, W.
dc.contributor.authorMIZUNO, T.
dc.contributor.authorMONTE, C.
dc.contributor.authorE. MONZANI, M.
dc.contributor.authorMORSELLI, A.
dc.contributor.authorV. MOSKALENKO, I.
dc.contributor.authorMURGIA, S.
dc.contributor.authorL. NOLAN, P.
dc.contributor.authorP. NORRIS, J.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorNUSS, E.
dc.contributor.authorOHSUGI, T.
dc.contributor.authorOMODEI, N.
dc.contributor.authorORLANDO, E.
dc.contributor.authorF. ORMES, J.
dc.contributor.authorOZAKI, M.
dc.contributor.authorPANEQUE, D.
dc.contributor.authorH. PANETTA, J.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorPARENT, D.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorPELASSA, V.
dc.contributor.authorPEPE, M.
dc.contributor.authorPESCE-ROLLINS, M.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorPIRON, F.
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.authorS. ROCHESTER, L.
dc.contributor.authorY. RODRIGUEZ, A.
dc.contributor.authorW. ROMANI, R.
dc.contributor.authorROTH, M.
dc.contributor.authorF.-W. SADROZINSKI, H.
dc.contributor.authorSANDER, A.
dc.contributor.authorM. SAZ PARKINSON, P.
dc.contributor.authorD. SCARGLE, J.
dc.contributor.authorSGRO, C.
dc.contributor.authorS. SHAW, M.
dc.contributor.authorD. SMITH, P.
dc.contributor.authorSPANDRE, G.
dc.contributor.authorSPINELLI, P.
dc.contributor.authorSTARCK, Jean-Luc
dc.contributor.authorS. STRICKMAN, M.
dc.contributor.authorW. STRONG, A.
dc.contributor.authorJ. SUSON, D.
dc.contributor.authorTAJIMA, H.
dc.contributor.authorTAKAHASHI, H.
dc.contributor.authorTAKAHASHI, T.
dc.contributor.authorTANAKA, T.
dc.contributor.authorB. THAYER, J.
dc.contributor.authorG. THAYER, J.
dc.contributor.authorJ. THOMPSON, D.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorTIBALDO, L.
dc.contributor.authorF. TORRES, D.
dc.contributor.authorTOSTI, G.
dc.contributor.authorTRAMACERE, A.
dc.contributor.authorUCHIYAMA, Y.
dc.contributor.authorL. USHER, T.
dc.contributor.authorVASILEIOU, V.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorVILCHEZ, N.
dc.contributor.authorVITALE, V.
dc.contributor.authorP. WAITE, A.
dc.contributor.authorWANG, P.
dc.contributor.authorL. WINER, B.
dc.contributor.authorS. WOOD, K.
dc.contributor.authorYANG, Z.
dc.contributor.authorYLINEN, T.
dc.contributor.authorZIEGLER, M.
dc.date.issued2010-09-01
dc.identifier.issn0004-637X
dc.description.abstractEnThis is the first of a series of papers aimed at characterizing the populations detected in the high-latitude sky of the {\it Fermi}-LAT survey. In this work we focus on the intrinsic spectral and flux properties of the source sample. We show that when selection effects are properly taken into account, {\it Fermi} sources are on average steeper than previously found (e.g. in the bright source list) with an average photon index of 2.40$\pm0.02$ over the entire 0.1--100\,GeV energy band. We confirm that FSRQs have steeper spectra than BL Lac objects with an average index of 2.48$\pm0.02$ versus 2.18$\pm0.02$. Using several methods we build the deepest source count distribution at GeV energies deriving that the intrinsic source (i.e. blazar) surface density at F$_{100}\geq10^{-9}$\,ph cm$^{-2}$ s$^{-1}$ is 0.12$^{+0.03}_{-0.02}$\,deg$^{-2}$. The integration of the source count distribution yields that point sources contribute 16$(\pm1.8)$\,\% ($\pm$7\,\% systematic uncertainty) of the GeV isotropic diffuse background. At the fluxes currently reached by LAT we can rule out the hypothesis that point-like sources (i.e. blazars) produce a larger fraction of the diffuse emission.
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.subject.encosmology: observations
dc.subject.endiffuse radiation
dc.subject.engalaxies: active
dc.subject.engalaxies: jets
dc.subject.engamma rays: diffuse background
dc.subject.ensurveys
dc.title.enThe Fermi-LAT high-latitude Survey: Source Count Distributions and the Origin of the Extragalactic Diffuse Background
dc.typeArticle de revue
dc.identifier.doi10.1088/0004-637X/720/1/435
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE]
dc.identifier.arxiv1003.0895
bordeaux.journalThe Astrophysical Journal
bordeaux.page435-453
bordeaux.volume720
bordeaux.peerReviewedoui
hal.identifierin2p3-00530044
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00530044v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20Journal&rft.date=2010-09-01&rft.volume=720&rft.spage=435-453&rft.epage=435-453&rft.eissn=0004-637X&rft.issn=0004-637X&rft.au=A.%20ABDO,%20A.&ACKERMANN,%20Markus&AJELLO,%20Marco&ANTOLINI,%20E.&BALDINI,%20Luca&rft.genre=article


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