Discovery of the candidate pulsar wind nebula HESS J1718-385 in very-high-energy gamma-rays

Details Discovery of the candidate pulsar wind nebula HESS J1718-385 in very-high-energy gamma-rays Discovery of the candidate pulsar wind nebula HESS J1718-385 in very-high-energy gamma-rays

2007-09-27

arxiv.org/abs/0709.4380v1

Astronomy and Astrophysics

Astrophysics

Proceedings of the 30th ICRC, Merida, Mexico

Scientific paper

Motivated by recent detections of pulsar wind nebulae in very-high-energy (VHE) gamma rays, a systematic search for VHE gamma-ray sources associated with energetic pulsars was performed, using data obtained with the H.E.S.S. (High Energy Stereoscopic System) instrument. The search for VHE gamma-ray sources near the pulsar PSR J1718-3825 revealed the new VHE gamma-ray source HESS J1718-385. We report on the results from the HESS data analysis of this source and on possible associations with the pulsar and at other wavelengths. We investigate the energy spectrum of HESS J1718-385 that shows a clear peak. This is only the second time a VHE gamma-ray spectral maximum from a cosmic source was observed, the first being the Vela X pulsar wind nebula.

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