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Inferred Cosmic-Ray Spectrum from Fermi Large Area Telescope γ-Ray Observations of Earth’s Limb

dc.contributor.authorACKERMANN, M.
dc.contributor.authorAJELLO, M.
dc.contributor.authorALBERT, A.
dc.contributor.authorALLAFORT, A.
dc.contributor.authorBALDINI, L.
dc.contributor.authorBARBIELLINI, G.
dc.contributor.authorBASTIERI, D.
dc.contributor.authorBECHTOL, K.
dc.contributor.authorBELLAZZINI, R.
dc.contributor.authorBLANDFORD, R.D.
dc.contributor.authorBLOOM, E.D.
dc.contributor.authorBONAMENTE, E.
dc.contributor.authorBOTTACINI, E.
dc.contributor.authorBOUVIER, A.
dc.contributor.authorBRANDT, T.J.
dc.contributor.authorBRIGIDA, M.
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.authorCARAVEO, P.A.
dc.contributor.authorCECCHI, C.
dc.contributor.authorCHARLES, E.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorCHAVES, R.C.G.
dc.contributor.authorCHEKHTMAN, A.
dc.contributor.authorCHIANG, J.
dc.contributor.authorCHIARO, G.
dc.contributor.authorCIPRINI, S.
dc.contributor.authorCLAUS, R.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorCOHEN-TANUGI, J.
dc.contributor.authorCONRAD, J.
dc.contributor.authorCUTINI, S.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorDALTON, M.
dc.contributor.authorD'AMMANDO, F.
dc.contributor.authorDE ANGELIS, A.
dc.contributor.authorDE PALMA, F.
dc.contributor.authorDERMER, C.D.
dc.contributor.authorDIGEL, S.W.
dc.contributor.authorDI VENERE, L.
dc.contributor.authorDO COUTO E SILVA, E.
dc.contributor.authorDRELL, P.S.
dc.contributor.authorDRLICA-WAGNER, A.
dc.contributor.authorFAVUZZI, C.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorFEGAN, S.J.
dc.contributor.authorFERRARA, E.C.
dc.contributor.authorFOCKE, W.B.
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.authorGERMANI, S.
dc.contributor.authorGIGLIETTO, N.
dc.contributor.authorGIORDANO, F.
dc.contributor.authorGIROLETTI, M.
dc.contributor.authorGLANZMAN, T.
dc.contributor.authorGODFREY, G.
dc.contributor.authorGOMEZ-VARGAS, G.A.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorGRENIER, I.A.
dc.contributor.authorGROVE, J.E.
dc.contributor.authorGUIRIEC, S.
dc.contributor.authorGUSTAFSSON, M.
dc.contributor.authorHADASCH, D.
dc.contributor.authorHANABATA, Y.
dc.contributor.authorHARDING, A.K.
dc.contributor.authorHAYASHIDA, M.
dc.contributor.authorHAYASHI, K.
dc.contributor.authorHEWITT, J.W.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorHORAN, D.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorHOU, X.
dc.contributor.authorHUGHES, R.E.
dc.contributor.authorINOUE, Y.
dc.contributor.authorJACKSON, M.S.
dc.contributor.authorJOGLER, T.
dc.contributor.authorJOHANNESSON, G.
dc.contributor.authorJOHNSON, A.S.
dc.contributor.authorKAMAE, T.
dc.contributor.authorKAWANO, T.
hal.structure.identifierInstitut de recherche en astrophysique et planétologie [IRAP]
hal.structure.identifierUniversité Toulouse III - Paul Sabatier [UT3]
dc.contributor.authorKNODLSEDER, J.
dc.contributor.authorKUSS, M.
dc.contributor.authorLANDE, J.
dc.contributor.authorLARSSON, S.
dc.contributor.authorLATRONICO, L.
dc.contributor.authorLONGO, F.
dc.contributor.authorLOPARCO, F.
dc.contributor.authorLOVELLETTE, M.N.
dc.contributor.authorLUBRANO, P.
dc.contributor.authorMAYER, M.
dc.contributor.authorMAZZIOTTA, M.N.
dc.contributor.authorMCENERY, J.E.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorMEHAULT, J.
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.authorNEMMEN, R.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorNUSS, E.
dc.contributor.authorOHSUGI, T.
dc.contributor.authorOKUMURA, A.
dc.contributor.authorORIENTI, M.
dc.contributor.authorORLANDO, E.
dc.contributor.authorORMES, J.F.
dc.contributor.authorPANEQUE, D.
dc.contributor.authorPANETTA, J.H.
dc.contributor.authorPERKINS, J.S.
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.authorRAZZAQUE, S.
dc.contributor.authorREIMER, A.
dc.contributor.authorREIMER, O.
dc.contributor.authorRITZ, S.
dc.contributor.authorROTH, M.
dc.contributor.authorSCHAAL, M.
dc.contributor.authorSCHULZ, A.
dc.contributor.authorSGRO, C.
dc.contributor.authorSISKIND, E.J.
dc.contributor.authorSPANDRE, G.
dc.contributor.authorSPINELLI, P.
dc.contributor.authorSTRONG, A.W.
dc.contributor.authorTAKAHASHI, H.
dc.contributor.authorTAKEUCHI, Y.
dc.contributor.authorTHAYER, J.G.
dc.contributor.authorTHAYER, J.B.
dc.contributor.authorTHOMPSON, D.J.
dc.contributor.authorTIBALDO, L.
dc.contributor.authorTINIVELLA, M.
dc.contributor.authorTORRES, D.F.
dc.contributor.authorTOSTI, G.
dc.contributor.authorTROJA, E.
dc.contributor.authorTRONCONI, V.
dc.contributor.authorUSHER, T.L.
dc.contributor.authorVANDENBROUCKE, J.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorVASILEIOU, V.
dc.contributor.authorVIANELLO, G.
dc.contributor.authorVITALE, V.
dc.contributor.authorWERNER, M.
dc.contributor.authorWINER, B.L.
dc.contributor.authorWOOD, K.S.
dc.contributor.authorWOOD, M.
dc.contributor.authorYANG, Z.
dc.date.issued2014
dc.description.abstractEn<p>Recent accurate measurements of cosmic-ray (CR) species by ATIC-2, CREAM, and PAMELA reveal an unexpected hardening in the proton and He spectra above a few hundred GeV, a gradual softening of the spectra just below a few hundred GeV, and a harder spectrum of He compared to that of protons. These newly discovered features may offer a clue to the origin of high-energy CRs. We use the Fermi Large Area Telescope observations of the <inline-formula><mml:math display="inline"><mml:mrow><mml:mi>γ</mml:mi></mml:mrow></mml:math></inline-formula>-ray emission from Earth’s limb for an indirect measurement of the local spectrum of CR protons in the energy range <inline-formula><mml:math display="inline"><mml:mrow><mml:mrow><mml:mo>∼</mml:mo><mml:mn>90</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi></mml:mrow><mml:mi>–</mml:mi><mml:mn>6</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:mrow></mml:math></inline-formula> (derived from a photon energy range 15 GeV–1 TeV). Our analysis shows that single power law and broken power law spectra fit the data equally well and yield a proton spectrum with index <inline-formula><mml:math display="inline"><mml:mrow><mml:mn>2.68</mml:mn><mml:mo>±</mml:mo><mml:mn>0.04</mml:mn></mml:mrow></mml:math></inline-formula> and <inline-formula><mml:math display="inline"><mml:mrow><mml:mn>2.61</mml:mn><mml:mo>±</mml:mo><mml:mn>0.08</mml:mn></mml:mrow></mml:math></inline-formula> above <inline-formula><mml:math display="inline"><mml:mrow><mml:mo>∼</mml:mo><mml:mn>200</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi></mml:mrow></mml:math></inline-formula>, respectively.</p>
dc.language.isoen
dc.subject.en96.50.sb
dc.subject.en95.85.Pw
dc.subject.en95.85.Ry
dc.subject.en98.70.Sa
dc.subject.enp: spectrum
dc.subject.encosmic radiation: spectrum
dc.subject.enphoton: energy
dc.subject.enhelium: spectrum
dc.subject.engamma ray: emission
dc.subject.enGLAST
dc.subject.enPAMELA
dc.subject.enCREAM
dc.title.enInferred Cosmic-Ray Spectrum from Fermi Large Area Telescope γ-Ray Observations of Earth’s Limb
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.112.151103
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.subject.halPhysique [physics]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
dc.identifier.arxiv1403.5372
bordeaux.journalPhys.Rev.Lett.
bordeaux.page151103
bordeaux.volume112
bordeaux.peerReviewedoui
hal.identifierhal-02017125
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02017125v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Phys.Rev.Lett.&amp;rft.date=2014&amp;rft.volume=112&amp;rft.spage=151103&amp;rft.epage=151103&amp;rft.au=ACKERMANN,%20M.&amp;AJELLO,%20M.&amp;ALBERT,%20A.&amp;ALLAFORT,%20A.&amp;BALDINI,%20L.&amp;rft.genre=article


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