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Characterizing the Gamma-ray Emission Properties of the Globular Cluster M5 with the Fermi-LAT

dc.contributor.authorHOU, X
dc.contributor.authorZHANG, W
dc.contributor.authorFREIRE, P.C.C
dc.contributor.authorTORRES, D.F
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorBALLET, J
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorSMITH, D.A
dc.contributor.authorJOHNSON, T.J
dc.contributor.authorKERR, M
dc.contributor.authorCHEUNG, C.C
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.authorLI, J
dc.contributor.authorZHANG, L
dc.contributor.authorRIDOLFI, A
dc.contributor.authorWANG, P
dc.contributor.authorLI, D
dc.contributor.authorYUAN, J
dc.contributor.authorWANG, N
dc.date.issued2024
dc.description.abstractEnWe analyzed the globular cluster M5 (NGC 5904) using 15 years of gamma-ray data from the Fermi Large Area Telescope (LAT). Using rotation ephemerides generated from Arecibo and FAST radio telescope observations, we searched for gamma-ray pulsations from the seven millisecond pulsars (MSPs) identified in M5. We detected no significant pulsations from any of the individual pulsars. Also, we searched for possible variations of the gamma-ray emission as a function of orbital phase for all the six MSPs in binary systems, but did not detect any significant modulations. The gamma-ray emission from the direction of M5 is well described by an exponentially cutoff power-law spectral model, although other models cannot be excluded. The phase-averaged emission is consistent with being steady on a time scale of a few months. We estimate the number of MSPs in M5 to be between 1 and 10, using the gamma-ray conversion efficiencies for well-characterized gamma-ray MSPs in the Third Fermi Large Area Telescope Catalog of Gamma-ray Pulsars, suggesting that the sample of known MSPs in M5 is (nearly) complete, even if it is not currently possible to rule out a diffuse component of the observed gamma rays from the cluster
dc.language.isoen
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.engamma ray
dc.subject.enemission
dc.subject.encluster
dc.subject.enpulsar
dc.subject.enspectral
dc.subject.enbinary
dc.subject.enefficiency
dc.subject.enmodulation
dc.subject.enGLAST
dc.subject.enrotation
dc.title.enCharacterizing the Gamma-ray Emission Properties of the Globular Cluster M5 with the Fermi-LAT
dc.typeArticle de revue
dc.identifier.doi10.3847/1538-4357/ad3210
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.identifier.arxiv2401.08231
bordeaux.journalAstrophys.J
bordeaux.page118
bordeaux.volume964
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-04446870
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04446870v1
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