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Discovery of gamma- and X-ray pulsations from the young and energetic PSR J1357−6429 with Fermi and XMM-Newton

hal.structure.identifierGLAST
dc.contributor.authorLEMOINE-GOUMARD, M.
dc.contributor.authorE. ZAVLIN, V.
dc.contributor.authorGRONDIN, M.-H.
dc.contributor.authorSHANNON, R.
hal.structure.identifierGLAST
dc.contributor.authorSMITH, David Stanley
dc.contributor.authorBURGAY, M.
dc.contributor.authorCAMILO, F.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorCOHEN-TANUGI, J.
dc.contributor.authorC. C. FREIRE, P.
dc.contributor.authorE. GROVE, J.
dc.contributor.authorGUILLEMOT, L.
dc.contributor.authorJOHNSTON, S.
dc.contributor.authorKEITH, M.
dc.contributor.authorKRAMER, M.
dc.contributor.authorN. MANCHESTER, R.
dc.contributor.authorF. MICHELSON, P.
dc.contributor.authorPARENT, D.
dc.contributor.authorPOSSENTI, A.
dc.contributor.authorS. RAY, P.
dc.contributor.authorRENAUD, M.
dc.contributor.authorE. THORSETT, S.
dc.contributor.authorWELTEVREDE, P.
dc.contributor.authorT. WOLFF, M.
dc.date.issued2011-09-13
dc.identifier.issn0004-6361
dc.description.abstractEnSince the launch of the Fermi satellite, the number of known gamma-ray pulsars has increased tenfold. Most gamma-ray detected pulsars are young and energetic, and many are associated with TeV sources. PSR J1357-6429 is a high spin-down power pulsar (Edot = 3.1 * 10^36 erg/s), discovered during the Parkes multibeam survey of the Galactic plane, with significant timing noise typical of very young pulsars. In the very-high-energy domain, H.E.S.S. has reported the detection of the extended source HESS J1356-645 (intrinsic Gaussian width of 12') whose centroid lies 7' from PSR J1357-6429. Using a rotational ephemeris obtained with 74 observations made with the Parkes telescope at 1.4 GHz, we phase-fold more than two years of gamma-ray data acquired by Fermi-LAT as well as those collected with XMM-Newton, and perform gamma-ray spectral modeling. Significant gamma and X-ray pulsations are detected from PSR J1357-6429. The light curve in both bands shows one broad peak. Gamma-ray spectral analysis of the pulsed emission suggests that it is well described by a simple power-law of index 1.5 +/- 0.3stat +/- 0.3syst with an exponential cut-off at 0.8 +/- 0.3stat +/- 0.3syst GeV and an integral photon flux above 100 MeV of (6.5 +/- 1.6stat +/- 2.3syst) * 10^-8 cm^-2 s^-1. The X-ray spectra obtained from the new data provide results consistent with those reported by Zavlin (2007). Upper limits on the gamma-ray emission from its potential pulsar wind nebula (PWN) are also reported. Assuming a distance of 2.4 kpc, the Fermi LAT energy flux yields a gamma-ray luminosity for PSR J1357-6429 of L_gamma = (2.13 +/- 0.25stat +/- 0.83syst) * 10^34 erg/s, consistent with an L_gamma \propto sqrt(Edot) relationship. The Fermi non-detection of the pulsar wind nebula associated with HESS J1356-645 provides new constraints on the electron population responsible for the extended TeV emission.
dc.language.isoen
dc.publisherEDP Sciences
dc.title.enDiscovery of gamma- and X-ray pulsations from the young and energetic PSR J1357−6429 with Fermi and XMM-Newton
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201117413
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.arxiv1108.0161
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA102
bordeaux.volume533
bordeaux.peerReviewedoui
hal.identifierin2p3-00656586
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00656586v1
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