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The Search for Spatial Extension in High-latitude Sources Detected by the $Fermi$ Large Area Telescope

dc.contributor.authorACKERMANN, M.
dc.contributor.authorAJELLO, M.
dc.contributor.authorBALDINI, L.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorBALLET, J.
dc.contributor.authorBARBIELLINI, G.
dc.contributor.authorBASTIERI, D.
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.authorCAMERON, R.A.
dc.contributor.authorCAPUTO, R.
dc.contributor.authorCARAVEO, P.A.
dc.contributor.authorCASTRO, D.
dc.contributor.authorCAVAZZUTI, E.
dc.contributor.authorCHARLES, E.
dc.contributor.authorCHEUNG, C.C.
dc.contributor.authorCHIARO, G.
dc.contributor.authorCIPRINI, S.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorCOHEN-TANUGI, Johann
dc.contributor.authorCOSTANTIN, D.
dc.contributor.authorCUTINI, S.
dc.contributor.authorD'AMMANDO, F.
dc.contributor.authorDE PALMA, F.
dc.contributor.authorDESAI, A.
dc.contributor.authorDI LALLA, N.
dc.contributor.authorDI MAURO, M.
dc.contributor.authorDI VENERE, L.
dc.contributor.authorFAVUZZI, C.
dc.contributor.authorFINKE, J.
dc.contributor.authorFRANCKOWIAK, A.
dc.contributor.authorFUKAZAWA, Y.
dc.contributor.authorFUNK, S.
dc.contributor.authorFUSCO, P.
dc.contributor.authorGARGANO, F.
dc.contributor.authorGASPARRINI, D.
dc.contributor.authorGIGLIETTO, N.
dc.contributor.authorGIORDANO, F.
dc.contributor.authorGIROLETTI, M.
dc.contributor.authorGREEN, D.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorGRENIER, I.A.
hal.structure.identifierLaboratoire de Physique et Chimie de l'Environnement et de l'Espace [LPC2E]
hal.structure.identifierUnité Scientifique de la Station de Nançay [USN]
dc.contributor.authorGUILLEMOT, L.
dc.contributor.authorGUIRIEC, S.
dc.contributor.authorHAYS, E.
dc.contributor.authorHEWITT, J.W.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorHORAN, D.
dc.contributor.authorJÓHANNESSON, G.
dc.contributor.authorKENSEI, S.
dc.contributor.authorKUSS, M.
dc.contributor.authorLARSSON, S.
dc.contributor.authorLATRONICO, L.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorLEMOINE-GOUMARD, M.
dc.contributor.authorLI, J.
dc.contributor.authorLONGO, F.
dc.contributor.authorLOPARCO, F.
dc.contributor.authorLOVELLETTE, M.N.
dc.contributor.authorLUBRANO, P.
dc.contributor.authorMAGILL, J.D.
dc.contributor.authorMALDERA, S.
dc.contributor.authorMANFREDA, A.
dc.contributor.authorMAZZIOTTA, M.N.
dc.contributor.authorMCENERY, J.E.
dc.contributor.authorMEYER, M.
dc.contributor.authorMIZUNO, T.
dc.contributor.authorMONZANI, M.E.
dc.contributor.authorMORSELLI, A.
dc.contributor.authorMOSKALENKO, I.V.
dc.contributor.authorNEGRO, M.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorNUSS, E.
dc.contributor.authorOMODEI, N.
dc.contributor.authorORIENTI, M.
dc.contributor.authorORLANDO, E.
dc.contributor.authorORMES, J.F.
dc.contributor.authorPALATIELLO, M.
dc.contributor.authorPALIYA, V.S.
dc.contributor.authorPANEQUE, D.
dc.contributor.authorPERKINS, J.S.
dc.contributor.authorPERSIC, M.
dc.contributor.authorPESCE-ROLLINS, M.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorPIRON, F.
dc.contributor.authorPORTER, T.A.
dc.contributor.authorPRINCIPE, G.
dc.contributor.authorRAINÒ, S.
dc.contributor.authorRANDO, R.
dc.contributor.authorRANI, B.
dc.contributor.authorRAZZAQUE, S.
dc.contributor.authorREIMER, A.
dc.contributor.authorREIMER, O.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorREPOSEUR, T.
dc.contributor.authorSGRÒ, C.
dc.contributor.authorSISKIND, E.J.
dc.contributor.authorSPANDRE, G.
dc.contributor.authorSPINELLI, P.
dc.contributor.authorSUSON, D.J.
dc.contributor.authorTAJIMA, H.
dc.contributor.authorTHAYER, J.B.
hal.structure.identifierInstitut de recherche en astrophysique et planétologie [IRAP]
dc.contributor.authorTIBALDO, L.
dc.contributor.authorTORRES, D.F.
dc.contributor.authorTOSTI, G.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorVALVERDE, J.
dc.contributor.authorVENTERS, T.M.
dc.contributor.authorVOGEL, M.
dc.contributor.authorWOOD, K.
dc.contributor.authorWOOD, M.
dc.contributor.authorZAHARIJAS, G.
hal.structure.identifierLaboratoire de l'Accélérateur Linéaire [LAL]
dc.contributor.authorBITEAU, J.
dc.date.issued2018
dc.description.abstractEnWe present a search for spatial extension in high-latitude () sources in recent Fermi point source catalogs. The result is the Fermi High-Latitude Extended Sources Catalog, which provides source extensions (or upper limits thereof) and likelihood profiles for a suite of tested source morphologies. We find 24 extended sources, 19 of which were not previously characterized as extended. These include sources that are potentially associated with supernova remnants and star-forming regions. We also found extended γ-ray emission in the vicinity of the Cen A radio lobes and—at GeV energies for the first time—spatially coincident with the radio emission of the SNR CTA 1, as well as from the Crab Nebula. We also searched for halos around active galactic nuclei, which are predicted from electromagnetic cascades induced by the e + e − pairs that are deflected in intergalactic magnetic fields. These pairs are produced when γ-rays interact with background radiation fields. We do not find evidence for extension in individual sources or in stacked source samples. This enables us to place limits on the flux of the extended source components, which are then used to constrain the intergalactic magnetic field to be stronger than 3 × 10−16 G for a coherence length λ ≳ 10 kpc, even when conservative assumptions on the source duty cycle are made. This improves previous limits by several orders of magnitude.
dc.language.isoen
dc.subject.enBL Lacertae objects: general
dc.subject.encatalogs
dc.subject.engamma rays: general
dc.subject.enISM: H ii Regions
dc.subject.enISM: supernova remnants
dc.title.enThe Search for Spatial Extension in High-latitude Sources Detected by the $Fermi$ Large Area Telescope
dc.typeArticle de revue
dc.identifier.doi10.3847/1538-4365/aacdf7
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.subject.halPlanète et Univers [physics]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
dc.identifier.arxiv1804.08035
bordeaux.journalAstrophys.J.Suppl.
bordeaux.page32
bordeaux.volume237
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-01815199
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01815199v1
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