- Conference date: 7–11 July 2008
- Location: Heidelberg (Germany)
The extended H.E.S.S. Galactic Plane Survey has resulted in the discovery of numerous very‐high‐energy (VHE; ) γ‐ray emitting sources. One of the most recent discoveries is HESS J1848‐018, which is detected with a post‐trial significance of over 5 σ. HESS J1848‐018 is found to be significantly extended with respect to the H.E.S.S. point spread function and has a complex morphology. An extensive search for multi‐wavelength counterparts (from radio to X‐ray) has found it to be in the direction of, but slightly offset from, the star‐forming region W 43, which hosts a giant HII region (G30.8‐0.2), a giant molecular cloud, and the Wolf‐Rayet star WR 121a in the main stellar cluster. If HESS J1848‐018 is indeed associated with W 43, it would be only the second known case, after Westerlund 2, of VHE γ‐ray emission associated with a star‐forming region. We report on the details of this new detection, including a comprehensive analysis of the multi‐wave length data currently available.
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