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Fermi-LAT Discovery of Extended Gamma-ray Emission in the Direction of Supernova Remnant W51C

dc.contributor.authorA. ABDO, A.
dc.contributor.authorACKERMANN, Markus
dc.contributor.authorAJELLO, Marco
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.authorBARING, Matthew G.
dc.contributor.authorBASTIERI, D.
dc.contributor.authorBAUGHMAN, B. M.
dc.contributor.authorBECHTOL, K.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorBELLAZZINI, R.
dc.contributor.authorBERENJI, B.
dc.contributor.authorBLANDFORD, R. D.
dc.contributor.authorBLOOM, E. D.
dc.contributor.authorBONAMENTE, E.
dc.contributor.authorBORGLAND, A.W.
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.authorBURNETT, T. H.
dc.contributor.authorBUSON, S.
dc.contributor.authorCALIANDRO, G. A.
dc.contributor.authorCAMERON, R. A.
dc.contributor.authorCARAVEO, P. A.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorCASANDJIAN, J. M.
dc.contributor.authorCECCHI, C.
dc.contributor.authorCELIK, O.
dc.contributor.authorCHEKHTMAN, A.
dc.contributor.authorCHEUNG, C. 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.authorCOMINSKI, L.R.
dc.contributor.authorCONRAD, J.
dc.contributor.authorCUTINI, S.
dc.contributor.authorDERMER, C.D.
dc.contributor.authorDE ANGELIS, A.
dc.contributor.authorDE PALMA, F.
dc.contributor.authorDIGEL, S. W.
dc.contributor.authorDORMODY, M.
dc.contributor.authorSILVA, E.D.E.
dc.contributor.authorDRELL, P. S.
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.authorFEGAN, S.J.
dc.contributor.authorFOCKE, W.B.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorFORTIN, P.
dc.contributor.authorFRAILIS, M.
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.authorGIAVITTO, G.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorGIEBELS, B.
dc.contributor.authorGIGLIETTO, N.
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.authorGRENIER, I. A.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGRONDIN, M.H.
dc.contributor.authorGROVE, J. E.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGUILLEMOT, L.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorGUIRIEC, S.
dc.contributor.authorHANABATA, Y.
dc.contributor.authorHARDING, A.K.
dc.contributor.authorHAYASHIDA, M.
dc.contributor.authorHAYS, E.
dc.contributor.authorHUGUES, R.E.
dc.contributor.authorJACKSON, M.S.
dc.contributor.authorJOHANNESSON, G.
dc.contributor.authorJOHNSON, A. S.
dc.contributor.authorJOHNSON, T. J.
dc.contributor.authorJOHNSON, W.N.
dc.contributor.authorKAMAE, T.
dc.contributor.authorKATAGIRI, H.
dc.contributor.authorKATAOKA, J.
dc.contributor.authorKAWAI, N.
dc.contributor.authorKERR, M.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorKNÖDLSEDER, Jürgen
dc.contributor.authorKOCIAN, M. L.
dc.contributor.authorKUSS, M.
dc.contributor.authorLANDE, J.
dc.contributor.authorLATRONICO, L.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorLEMOINE-GOUMARD, 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.authorLOVELLETTE, M.N.
dc.contributor.authorLUBRANO, P.
dc.contributor.authorMAKEEV, A.
dc.contributor.authorMAZZIOTTA, M. N.
dc.contributor.authorMCENERY, J. E.
dc.contributor.authorMEURER, C.
dc.contributor.authorMICHELSON, P. F.
dc.contributor.authorMITTHUMSIRI, W.
dc.contributor.authorMIZUNO, T.
dc.contributor.authorMOISEEV, A. A.
dc.contributor.authorMONTE, C.
dc.contributor.authorMONZANI, M.E.
dc.contributor.authorMORSELLI, A.
dc.contributor.authorMOSKALENKO, I.V.
dc.contributor.authorMURGIA, S.
dc.contributor.authorNAKAMORI, T.
dc.contributor.authorNOLAN, P. L.
dc.contributor.authorNORRIS, J.P.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorNUSS, E.
dc.contributor.authorOHSUGI, T.
dc.contributor.authorOKUMURA, A.
dc.contributor.authorOMODEI, N.
dc.contributor.authorORLANDO, E.
dc.contributor.authorORMES, J.F.
dc.contributor.authorPANEQUE, D.
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.authorRAINÒ, S.
dc.contributor.authorRANDO, R.
dc.contributor.authorRAZZANO, M.
dc.contributor.authorREIMER, A.
dc.contributor.authorREIMER, O.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorREPOSEUR, T.
dc.contributor.authorRITZ, S.
dc.contributor.authorRODRIGUEZ, A.Y.
dc.contributor.authorROMANI, R.W.
dc.contributor.authorROTH, M.
dc.contributor.authorRYDE, F.
dc.contributor.authorSADROSINSKI, H.F-W.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorSANCHEZ, D.
dc.contributor.authorSANDER, A.
dc.contributor.authorSAZ PARKINSON, P.M.
dc.contributor.authorSCARGLE, J.D.
dc.contributor.authorSCHALK, T.L.
dc.contributor.authorSGRÒ, C.
dc.contributor.authorSISKIND, E.J.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorSMITH, D.A.
dc.contributor.authorSMITH, P.D.
dc.contributor.authorSPANDRE, G.
dc.contributor.authorSPINELLI, P.
dc.contributor.authorSTRICKMAN, M.S.
dc.contributor.authorSUSON, D.J.
dc.contributor.authorTAJIMA, H.
dc.contributor.authorTAKAHASHI, H.
dc.contributor.authorTAKAHASHI, T.
dc.contributor.authorTANAKA, T.
dc.contributor.authorTHAYER, J. B.
dc.contributor.authorTHAYER, J. G.
dc.contributor.authorTHOMPSON, D.J.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorTIBALDO, L.
dc.contributor.authorTIBOLLA, O.
dc.contributor.authorTORRES, D.F.
dc.contributor.authorTOSTI, G.
dc.contributor.authorTRAMACERE, A.
dc.contributor.authorUCHIYAMA, Y.
dc.contributor.authorUSHER, T.L.
dc.contributor.authorVASILEIOU, V.
dc.contributor.authorVENTER, C.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorVILCHEZ, N.
dc.contributor.authorVITALE, V.
dc.contributor.authorWAITE, A. P.
dc.contributor.authorWANG, P.
dc.contributor.authorWINER, B. L.
dc.contributor.authorWOOD, K.S.
dc.contributor.authorYAMAZAKI, R.
dc.contributor.authorYLINEN, T.
dc.contributor.authorZIEGLER, M.
dc.date.issued2009-11-20
dc.identifier.issn2041-8205
dc.description.abstractEnThe discovery of bright gamma-ray emission coincident with supernova remnant (SNR) W51C is reported using the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. W51C is a middle-aged remnant (~10^4 yr) with intense radio synchrotron emission in its shell and known to be interacting with a molecular cloud. The gamma-ray emission is spatially extended, broadly consistent with the radio and X-ray extent of SNR W51C. The energy spectrum in the 0.2-50 GeV band exhibits steepening toward high energies. The luminosity is greater than 1x10^{36} erg/s given the distance constraint of D>5.5 kpc, which makes this object one of the most luminous gamma-ray sources in our Galaxy. The observed gamma-rays can be explained reasonably by a combination of efficient acceleration of nuclear cosmic rays at supernova shocks and shock-cloud interactions. The decay of neutral pi-mesons produced in hadronic collisions provides a plausible explanation for the gamma-ray emission. The product of the average gas density and the total energy content of the accelerated protons amounts to 5x10^{51}(D/6kpc)^2 erg/cm^3. Electron density constraints from the radio and X-ray bands render it difficult to explain the LAT signal as due to inverse Compton scattering. The Fermi LAT source coincident with SNR W51C sheds new light on the origin of Galactic cosmic rays.
dc.language.isoen
dc.publisherBristol : IOP Publishing
dc.subject.enacceleration of particles
dc.subject.enISM: individual (W51C)
dc.subject.enradiation mechanisms: non-thermal
dc.title.enFermi-LAT Discovery of Extended Gamma-ray Emission in the Direction of Supernova Remnant W51C
dc.typeArticle de revue
dc.identifier.doi10.1088/0004-637X/706/1/L1
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.arxiv0910.0908
bordeaux.journalThe Astrophysical journal letters
bordeaux.pageL1-L6
bordeaux.volume706
bordeaux.peerReviewedoui
hal.identifierin2p3-00436134
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00436134v1
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