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X- and gamma-ray studies of HESS J1731-347 coincident with a newly discovered SNR
Fabio Acero1, G. Pühlhofer, D. Klochkov, Nu. Komin2, Yves Gallant1, D. Horns, A. Santangelo
H. E. S. S. Collaboration Collaboration(s)

In the survey of the Galactic plane conducted with H.E.S.S., many VHEgamma-ray sources were discovered for which no clear counterpart at otherwavelengths could be identified. HESS J1731-347 initially belonged to thissource class. Recently however, the new shell-type supernova remnant (SNR)G353.6-0.7 was discovered in radio data, positionally coinciding with the VHEsource. We will present new X-ray observations that cover a fraction of the VHEsource, revealing nonthermal emission that most likely can be interpreted assynchrotron emission from high-energy electrons. This, along with a largerH.E.S.S. data set which comprises more than twice the observation time used inthe discovery paper, allows us to test whether the VHE source may indeed beattributed to shell-type emission from that new SNR. If true, this would makeHESS J1731-347 a new object in the small but growing class of non-thermalshell-type supernova remnants with VHE emission.
1 :  LPTA - Laboratoire de Physique Théorique et Astroparticules
2 :  IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)
Planète et Univers/Astrophysique/Phénomènes cosmiques de haute energie

Physique/Astrophysique/Phénomènes cosmiques de haute energie

Planète et Univers/Astrophysique/Astrophysique galactique

Physique/Astrophysique/Astrophysique galactique
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