J/A+A/545/L2ivo://CDS.VizieR/J/A+A/545/L2doi:10.26093/cds/vizier.35459002CDSH.E.S.S. CollaborationAbramowski A.Acero F.Aharonian F.,Akhperjanian A.G.Anton G.Balzer A.Barnacka A.Becherini Y.,Becker J.Bernlohr K.Birsin E.Biteau J.Bochow A.Boisson C.,Bolmont J.Bordas P.Brucker J.Brun F.Brun P.Bulik T.Busching I.,Carrigan S.Casanova S.P.M. ChadwickCharbonnier A.Chaves R.C.G.,Cheesebrough A.Cologna G.Conrad J.Cerruti M.Dalton M.Daniel M.K.,Davids I.D.Degrange B.Deil C.Dickinson H.J.Djannati-Atai A.,Domainko W.Drury L.O'C.Dubus G.Dutson K.Dyks J.Dyrda M.,Egberts K.Eger P.Espigat P.Fallon L.Fegan S.Feinstein F.,Fernandes M.V.Fiasson A.Fontaine G.Forster A.Fussling M.Gast H.,Gerard L.Gerbig D.Giebels B.Glicenstein J.F.Gluck B.Goring D.,Haffner S.Gallant Y.A.Hague J.D.Hahn J.Hampf D.Harris J.,Hauser M.Heinz S.Heinzelmann G.Henri G.Hermann G.Hillert A.,Hinton J.A.Hofmann W.Hofverberg P.Holler M.Horns D.,Jacholkowska A.de Jager O.C.Jahn C.Jamrozy M.Jung I.,Kastendieck M.A.Katarzynski K.Katz U.Kaufmann S.Keogh D.,Klochkov D.Kluzniak W.Kneiske T.Komin Nu.Kosack K.Kossakowski R.,Krayzel F.Khelifi B.Laffon H.Lamanna G.Lenain J.-P.Lennarz D.,Lohse T.Lopatin A.Lu C.-C.Marandon V.Marcowith A.Masbou J.,Maxted N.Mayer M.McComb T.J.L.Medina M.C.Mehault J.Moderski R.,Mohamed M.Moulin E.Naumann C.L.Naumann-Godo M.de Naurois M.,Nedbal D.Nekrassov D.Nguyen N.Nicholas B.Niemiec J.Nolan S.J.,Ohm S.de Ona Wilhelmi E.Opitz B.Ostrowski M.Panter M.,Paz Arribas M.Pekeur N.W.Pelletier G.Perez J.Petrucci P.-O.,Peyaud B.Pita S.Oya I.Puhlhofer G.Punch M.Quirrenbach A.Raue M.,Rayner S.M.Reimer A.Reimer O.Renaud M.de los Reyes R.Rieger F.,Ripken J.Rob L.Rosier-Lees S.Rowell G.Rudak B.Rulten C.B.,Sahakian V.Sanchez D.A.Santangelo A.Schlickeiser R.Schulz A.,Schwanke U.Schwarzburg S.Schwemmer S.Sheidaei F.Skilton J.L.,Sol H.Spengler G.Stawarz L.Steenkamp R.Stegmann C.Stinzing F.,Stycz K.Sushch I.Szostek A.Tavernet J.-P.Terrier R.,Tluczykont M.Valerius K.van Eldik C.Vasileiadis G.Venter C.,Viana A.Vincent P.Volk H.J.Volpe F.Vorobiov S.Vorster M.,Wagner S.J.Ward M.White R.Wierzcholska A.Zacharias M.Zajczyk A.,Zdziarski A.A.Zech A.Zechlin H.-S.2017-07-03T14:26:48Z2012-09-05T08:16:03ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frpulsarsgamma-ray-astronomyWe present the significant detection of the first extragalactic pulsar wind nebula (PWN) detected in gamma rays, N157B, located in the large Magellanic Cloud (LMC). Pulsars with high spin-down luminosity are found to power energised nebulae that emit gamma rays up to energies of several tens of TeV. N157B is associated with PSRJ0537-6910, which is the pulsar with the highest known spin-down luminosity. The High Energy Stereoscopic System telescope array observed this nebula on a yearly basis from 2004 to 2009 with a dead-time corrected exposure of 46h. The gamma-ray spectrum between 600GeV and 12TeV is well-described by a pure power-law with a photon index of 2.8+/-0.2stat+/-0.3syst and a normalisation at 1TeV of (8.2+/-0.8stat+/-2.5syst)x10^-13^/cm^2^/s/TeV. A leptonic multi-wavelength model shows that an energy of about 4x10^49^erg is stored in electrons and positrons. The apparent efficiency, which is the ratio of the TeV gamma-ray luminosity to the pulsar's spin-down luminosity, 0.08%+/-0.01%, is comparable to those of PWNe found in the Milky Way. The detection of a PWN at such a large distance is possible due to the pulsar's favourable spin-down luminosity and a bright infrared photon-field serving as an inverse-Compton-scattering target for accelerated leptons. By applying a calorimetric technique to these observations, the pulsar's birth period is estimated to be shorter than 10ms.2012A&A...545L...2Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/545/L2CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/545/L2https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/545/L2http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/545/L2https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/545/L2https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/545/L2http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/545/L2GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapGamma-rayRadiodefaultJ/A+A/545/L2/spectrumSpectral points for N157B (HESS J0537-691)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEMean energyTeVphys.energyfloatFluxDifferential photon fluxph.TeV**-1.m**-2.s**-1phot.flux.density;em.gamma.harddoublee_FluxMinimum flux errorph.TeV**-1.m**-2.s**-1stat.error;phot.fluxdoubleE_FluxMaximum flux errorph.TeV**-1.m**-2.s**-1stat.error;stat.maxdouble