XMM-Newton observations of HESS J1813-178 reveal a composite Supernova remnant

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dc.creatorFunk, S.
dc.creatorHinton, J. A.
dc.creatorMoriguchi, Y.
dc.creatorAharonian, F. A.
dc.creatorFukui, Y.
dc.creatorHofmann, W.
dc.creatorHorns, D.
dc.creatorPuehlhofer, G.
dc.creatorReimer, O.
dc.creatorRowell, G.
dc.creatorTerrier, R.
dc.creatorVink, J.
dc.creatorWagner, S.
dc.date2006-11-20
dc.date.accessioned2026-07-07T11:00:15Z
dc.date.available2026-07-07T11:00:15Z
dc.descriptionWe present X-ray and 12CO(J=1-0) observations of the very-high-energy (VHE) gamma-ray source HESS J1813-178 with the aim of understanding the origin of the gamma-ray emission. Using this dataset we are able to undertake spectral and morphological studies of the X-ray emission from this object with greater precision than previous studies. NANTEN 12CO(J=1-0) data are used to search for correlations of the gamma-ray emission with molecular clouds which could act as target material for gamma-ray production in a hadronic scenario. The NANTEN 12CO(J=1-0) observations show a giant molecular cloud of mass 2.5 10^5 M$_{\sun}$ at a distance of 4 kpc in the vicinity of HESS J1813-178. Even though there is no direct positional coincidence, this giant cloud might have influenced the evolution of the gamma-ray source and its surroundings. The X-ray data show a highly absorbed non-thermal X-ray emitting object coincident with the previously known ASCA source AX J1813-178 showing a compact core and an extended tail towards the north-east, located in the centre of the radio shell-type Supernova remnant (SNR) G12.82-0.2. This central object shows morphological and spectral resemblance to a Pulsar Wind Nebula (PWN) and we therefore consider that the object is very likely to be a composite SNR. We discuss the scenario in which the gamma-rays originate in the shell of the SNR and the one in which they originate in the central object. We demonstrate, that in order to connect the core X-ray emission to the VHE gamma-ray emission electrons have to be accelerated to energies of at least 1 PeV.
dc.descriptionSubmitted to A&A
dc.identifierhttps://arxiv.org/abs/astro-ph/0611646
dc.identifierhttp://arxiv.org/abs/astro-ph/0611646
dc.identifierAstron.Astrophys.470:249-258,2007
dc.identifierdoi:10.1051/0004-6361:20066779
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187642
dc.subjectAstrophysics
dc.titleXMM-Newton observations of HESS J1813-178 reveal a composite Supernova remnant
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