Résumé
The detection of γ rays from the source HESS J1745-290 in the Galactic Center (GC) region with the High Energy Spectroscopic System (HESS) array of Cherenkov telescopes in 2004 is presented. After subtraction of the diffuse γ-ray emission from the GC ridge, the source is compatible with a point source with spatial extent less than 1.2′(stat) (95% C.L.). The measured energy spectrum above 160 GeV is compatible with a power law with photon index of 2.25±0.04(stat)±0.10(syst) and no significant flux variation is detected. It is finally found that the bulk of the very high energy emission must have non-dark-matter origin.
| langue originale | Anglais |
|---|---|
| Numéro d'article | 221102 |
| journal | Physical Review Letters |
| Volume | 97 |
| Numéro de publication | 22 |
| Les DOIs | |
| état | Publié - 8 déc. 2006 |
| Modification externe | Oui |
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