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gamma rays: observations -- ISM: individual objects: PSR B1706-44 -- ISM: supernova remnants -- ISM: individual objects: G 343.1-2.3 H.E.S.S
Abstract:
The region around PSR B1706-44 has been observed with the HESS imaging atmospheric Cherenkov telescopes in 2003. No evidence for gamma-ray emission in the TeV range was found at the pulsar position or at the radio arc which corresponds to the supernova remnant G 343.1-2.3. The 99% confidence level flux upper limit at the pulsar position is Ful(E>350 GeV)= 1.4 x 10-12 s -1cm-2 assuming a power law (dN/dE ∝ E-Γ ) with photon index of Γ = 2.5 and F ul (E>500 GeV) = 1.3 x 10 -12s-1cm-2 without an assumption on the spectral shape. The reported upper limits correspond to 8% of the flux from an earlier detection by the CANGAROO experiment.