Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/21018
 Title: Discovery of an X-ray nebula around PSR J1718-3825 and implications for the nature of the α-ray source HESS J1718-385 Authors: Hinton, J. A.Funk, S.Carrigan, S.Kosack, K.Gallant, Y. A.De Jager OCLemière, A.Pühlhofer, G. First Published: Dec-2007 Publisher: EDP Sciences for European Southern Observatory (ESO) Citation: Astronomy & Astrophysics, 2007, 476 (3) Abstract: Combined X-ray synchrotron and inverse-Compton $\gamma$-ray observations of pulsar wind nebulae (PWN) may help to elucidate the processes of acceleration and energy loss in these systems. In particular, such observations provide constraints on the particle injection history and the magnetic field strength in these objects. The newly discovered TeV $\gamma$-ray source HESS J1718-385 has been proposed as the likely PWN of the high spin-down luminosity pulsar PSR J1718-3825. The absence of previous, sensitive X-ray measurements of this pulsar, and the unusual energy spectrum of the TeV source, motivated observations of this region with XMM-Newton. The data obtained reveal a hard-spectrum X-ray source at the position of PSR 1718-3825 and evidence of diffuse emission in the vicinity of the pulsar. We derive limits on the keV emission from the centroid of HESS J1718-385 and discuss the implications of these findings for the PWN nature of this object. DOI Link: 10.1051/0004-6361:20078775 ISSN: 0004-6361 eISSN: 1432-0746 Links: http://hdl.handle.net/2381/21018http://www.aanda.org/articles/aa/abs/2007/48/aa8775-07/aa8775-07.html Version: Publisher Version Status: Peer-reviewed Type: Journal Article Rights: Copyright © 2007 ESO. Reproduced with permission from Astronomy & Astrophysics, © ESO. Appears in Collections: Published Articles, Dept. of Physics and Astronomy

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