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Title: Very high energy gamma rays from the direction of Sagittarius A
Authors: Aharonian, F.
Akhperjanian, A. G.
Aye, KM.
Bazer-Bachi, A. R.
Beilicke, M.
Benbow, W.
Berge, D.
Berghaus, P.
Bernlohr, K.
Bolz, O.
Boisson, C.
Borgmeier, C.
Breitling, F.
Brown, A. M.
Gordo, J. B.
Chadwick, P. M.
Chitnis, V. R.
Chounet, L. M.
Cornils, R.
Costamante, L.
Degrange, B.
Djannati-Atai, A.
Drury, L. O.
Ergin, T.
Espigat, P.
Feinstein, F.
Fleury, P.
Fontaine, G.
Funk, S.
Gallant, Y.
Giebels, B.
Gillessen, S.
Goret, P.
Guy, J.
Hadjichristidis, C.
Hauser, M.
Heinzelmann, G.
Henri, G.
Hermann, G.
Hinton, J. A.
Hofmann, W.
Holleran, M.
Horns, D.
de Jager O. C.
Jung, I.
Khelifi, B.
Komin, N.
Konopelko, A.
Latham, IJ.
Le Gallou R.
Lemoine, M.
Lemiere, A.
Leroy, N.
Lohse, T.
Marcowith, A.
Masterson, C.
McComb, T. J. L.
de Naurois A.
Nolan, S. J.
Noutsos, A.
Orford, K. J.
Osborne, J. L.
Ouchrif, M.
Panter, M.
Pelletier, G.
Pita, S.
Pohl, M.
Puhlhofer, G.
Punch, M.
Raubenheimer, B. C.
Raue, M.
Raux, J.
Rayner, S. M.
Redondo, I.
Reimer, A.
Reimer, O.
Ripken, J.
Rivoal, M.
Rob, L.
Rolland, L.
Rowell, G.
Sahakian, V.
Sauge, L.
Schlenker, S.
Schlickeiser, R.
Schuster, C.
Schwanke, U.
Siewert, M.
Sol, H.
Steenkamp, R.
Stegmann, C.
Tavernet, J. P.
Theoret, C. G.
Tluczykont, M.
van der Walt D. J.
Vasileiadis, G.
Vincent, P.
Visser, B.
Volk, H. J.
Wagner, S. J.
First Published: Oct-2004
Publisher: EDP Sciences for European Southern Observatory (ESO)
Citation: Astronomy & Astrophysics, 2004, 425 (1), pp. L13-L17
Abstract: We report the detection of a point-like source of very high energy (VHE) $\gamma$-rays coincident within 1' of Sgr A *, obtained with the HESS array of Cherenkov telescopes. The $\gamma$-rays exhibit a power-law energy spectrum with a spectral index of $-2.2 \pm 0.09 \pm 0.15$ and a flux above the 165 GeV threshold of $(1.82 \pm 0.22) \times 10^{-7}$ m -2 s -1. The measured flux and spectrum differ substantially from recent results reported in particular by the CANGAROO collaboration.
DOI Link: 10.1051/0004-6361:200400055
ISSN: 0004-6361
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2004 ESO. Reproduced with permission from Astronomy & Astrophysics, © ESO.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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