HESS upper limit on the very high energy γ-ray emission from the globular cluster 47 Tucanae

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dc.contributor.authorAharonian, F.
dc.contributor.authorAkhperjanian, A.
dc.contributor.authorAnton, G.
dc.contributor.authorBarres de Almaida, U.
dc.contributor.authorBazer-Bachi, A.
dc.contributor.authorBecherini, Y.
dc.contributor.authorBehera, B.
dc.contributor.authorBernlohr, K.
dc.contributor.authorBoisson, C.
dc.contributor.authorBochow, A.
dc.contributor.authorBorrel, V.
dc.contributor.authorBraun, I.
dc.contributor.authorBrion, E.
dc.contributor.authorBrucker, J.
dc.contributor.authorBrun, P.
dc.contributor.authorBuhler, R.
dc.contributor.authorBulik, T.
dc.contributor.authorBusching, I.
dc.contributor.authorBoutelier, T.
dc.contributor.authorChadwick, P.
dc.contributor.authoret al.
dc.date.issued2009
dc.description.abstractObservations of the globular cluster 47 Tucanae (NGC 104), which contains at least 23 ms pulsars, were performed with the HESS telescope system. The observations lead to an upper limit of F(E < 800 GeV) < 6.7 × 10-13 cm-2 s-1 on the integral γ-ray photon flux from 47 Tucanae. Considering millisecond pulsars as the unique potential source of γ-rays in the globular cluster, constraints based on emission models are derived: on the magnetic field in the average pulsar nebula and on the conversion efficiency of spin-down power to γ-ray photons or to relativistic leptons. © 2009 ESO.
dc.description.statementofresponsibilityF. Aharonian ... G. Rowell ... et al.
dc.identifier.citationAstronomy and Astrophysics: a European journal, 2009; 499(1):273-277
dc.identifier.doi10.1051/0004-6361/200811564
dc.identifier.issn0004-6361
dc.identifier.issn1432-0746
dc.identifier.orcidRowell, G. [0000-0002-9516-1581]
dc.identifier.urihttp://hdl.handle.net/2440/50809
dc.language.isoen
dc.publisherE D P Sciences
dc.rightsCopyright © ESO 2009
dc.source.urihttps://doi.org/10.1051/0004-6361/200811564
dc.subjectGalaxy: globular clusters: individual: 47 Tucanae
dc.subjectstars: pulsars: general
dc.subjectgamma rays: observations
dc.titleHESS upper limit on the very high energy γ-ray emission from the globular cluster 47 Tucanae
dc.title.alternativeHESS upper limit on the very high energy gamma-ray emission from the globular cluster 47 Tucanae
dc.typeJournal article
pubs.publication-statusPublished

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