X- and gamma-ray studies of HESS J1731-347 coincident with a newly discovered SNR - Archive ouverte HAL Access content directly
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X- and gamma-ray studies of HESS J1731-347 coincident with a newly discovered SNR

G. Pühlhofer
  • Function : Author
D. Klochkov
  • Function : Author
D. Horns
A. Santangelo

Abstract

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.

Dates and versions

hal-00430140 , version 1 (05-11-2009)

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Fabio Acero, G. Pühlhofer, D. Klochkov, Nu. Komin, Yves Gallant, et al.. X- and gamma-ray studies of HESS J1731-347 coincident with a newly discovered SNR. 2009. ⟨hal-00430140⟩
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