| HAL : in2p3-00379110, version 1 |
| arXiv : 0904.2654 |
| Code Bibliographique ADS : 2009arXiv0904.2654R |
| Fiche détaillée | Récupérer au format |
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| 44th Rencontres de Moriond - Very High Energy Phenomena in the Universe, La Thuile (Val d'Aosta) : Italy (2009) |
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| Discovery of VHE gamma-rays from Centaurus A |
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| M. RaueJ.-P. Lenain1F. A. AharonianY. Becherini2C. Boisson1A.-C. ClapsonL. CostamanteL. Gerard2C. Medina1M. De Naurois3M. Punch2F. RiegerH. SolL. StawarzA. Zech1 |
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| HESS Collaboration(s) |
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| (2009) |
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| We report the discovery of faint very high energy (VHE, E > 100 GeV) gamma-ray emission from the radio galaxy Centaurus A in deep observations performed with the H.E.S.S. experiment. A signal with a statistical significance of 5.0 sigma is detected from the region including the radio core and the inner kpc jets. The integral flux above an energy threshold of ~250 GeV is measured to be 0.8% of the flux of the Crab Nebula and the spectrum can be described by a power law with a photon index of 2.7 +/- 0.5_stat +/- 0.2_sys. No significant flux variability is detected in the data set. The discovery of VHE gamma-ray emission from Centaurus A reveals particle acceleration in the source to >TeV energies and, together with M 87, establishes radio galaxies as a class of VHE emitters. |
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| 1 : | LUTH - Laboratoire Univers et Théories |
| 2 : | APC - AstroParticule et Cosmologie |
| 3 : | LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies |
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| APC - AHE |
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| Thème(s) | : | Physique/Astrophysique/Cosmologie et astrophysique extra-galactique Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique |
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| Lien vers le texte intégral : |
| in2p3-00379110, version 1 | |
| http://hal.in2p3.fr/in2p3-00379110 | |
| oai:hal.in2p3.fr:in2p3-00379110 | |
| Contributeur : Simone Lantz | |
| Soumis le : Lundi 27 Avril 2009, 16:23:22 | |
| Dernière modification le : Lundi 19 Mars 2012, 18:40:49 | |