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4th International Meeting on High Energy Gamma-Ray Astronomy, Heidelberg : Allemagne (2008)
Discovery of a pulsar wind nebula associated with IGR J18490-0000
R. Terrier1, F. Mattana1, A. Djannati-Ataï1, V. Marandon1, M. Renaud2, F. Dubois3

The IBIS/ISGRI camera on board the INTEGRAL observatory has performed a full survey of the Galactic disk in the hard X-ray regime from 20 keV up to several hundred of keV with an unprecedented sensitivity and angular resolution in this energy range. Among a large number of compact binary systems, this survey has revealed a number of unidentified objects. Using X-ray observations of one of these sources, IGR J18490-0000, we discovered a rather bright non-thermal pointlike object surrounded by an extended diffuse nebula compatible with the Integral position. The morphology and spectral behaviour of both pointlike and extended X-ray emissions are reminiscent of a young pulsar wind nebula of a few thousands years. The H.E.S.S. Array has observed the region and we present the TeV detection of the object. We compare this object to other PWNe visible in the hard X-ray and TeV regime.
1 :  APC - UMR 7164 - AstroParticule et Cosmologie
2 :  MPI-K - Max-Planck-Institut fuer Kernphysik, Heidelberg
3 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
Physique/Astrophysique/Phénomènes cosmiques de haute energie

Planète et Univers/Astrophysique/Phénomènes cosmiques de haute energie
pulsars – nebulae – astronomical telescopes – gamma-rays