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Very high energy gamma rays from the direction of Sagittarius A*.

Aharonian,, F. and Akhperjanian, A. G. and Aye, K.-M. and Bazer-Bachi, A. R. and Beilicke, M. and Benbow, W. and Berge, D. and Berghaus, P. and Bernlöhr, K. and Bolz, O. and Boisson, C. and Borgmeier, C. and Breitling, F. and Brown, A. M. and Bussons Gordo, J. and Chadwick, P. M. and Chitnis, V. R. and Chounet, L.-M. and Cornils, R. and Costamante, L. and Degrange, B. and Djannati-Ataï, A. O'C. and Drury, L. and Ergin, T. and Espigat, P. and Feinstein, F. and Fleury, P. and Fontaine, G. and Funk, S. and Gallant, Y. and Giebels, B. and Gillessen, S. and Goret, P. and Guy, J. and Hadjichristidis, C. and Hauser, M. and Heinzelmann, G. and Henri, G. and Hermann, G. and Hinton, J. A. and Hofmann, W. and Holleran, M. and Horns, D. and de Jager, O. C. and Jung, I. and Khélifi, B. and Komin, N. and Konopelko, A. and Latham, I. J. and Le Gallou, R. and Lemoine, M. and Lemière, A. and Leroy, N. and Lohse, T. and Marcowith, A. and Masterson, C. and McComb, T. J. L. and de Naurois, M. and Nolan, S. J. and Noutsos, A. and Orford, K. J. and Osborne, J. L. and Ouchrif, M. and Panter, M. and Pelletier, G. and Pita, S. and Pohl, M. and Pühlhofer, G. and Punch, M., M. and Raubenheimer, B. C. and Raue, M. and Raux, J. and Rayner, S. M. and Redondo, I. and Reimer, A, and Reimer, O. and Ripken, J. and Rivoal, M. and Rob, L. and Rolland, L. and Rowell, G. and Sahakian, V. and Saugé, L. and Schlenker, S. and Schlickeiser, R. and Schuster, C. and Schwanke, U. and Siewert, M. and Sol, H. and Steenkamp, R. and Stegmann, C. and Tavernet, J.-P. and Théoret, C. G. and Tluczykont, M. and van der Walt, D. J. and Vasileiadis, G. and Vincent, P. and Visser, B. and Völk, H. J. and Wagner, S. J. (2004) 'Very high energy gamma rays from the direction of Sagittarius A*.', Astronomy & astrophysics., 425 (1). L13-L17.

Abstract

We report the detection of a point-like source of very high energy (VHE) -rays coincident within 1' of Sgr A *, obtained with the HESS array of Cherenkov telescopes. The -rays exhibit a power-law energy spectrum with a spectral index of and a flux above the 165 GeV threshold of m -2 s -1. The measured flux and spectrum differ substantially from recent results reported in particular by the CANGAROO collaboration.

Item Type:Article
Keywords:Gamma-rays, Observations, Galaxy centre.
Full text:PDF - Published Version (346Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1051/0004-6361:200400055
Record Created:29 May 2008
Last Modified:05 Aug 2011 16:34

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