Very high energy gamma rays from the direction of Sagittarius A<sup>*</sup>

Aharonian, F.; G. Akhperjanian, A.; M. Aye, K.; R. Bazer‐Bachi, A.; Beilicke, M.; Benbow, W.; Berge, D.; Berghaus, P.; Bernlöhr, K.; Bolz, O.; Boisson, C.; Borgmeier, C.; Breitling, F.; M. Brown, A.; Bussóns Gordo, J.; M. Chadwick, P.; R. Chitnis, V.; Chounet, L.‐M.; Cornils, R.; Costamante, L.; Degrange, B.; Djannati-Ataı̈, A.; O’C. Drury, L.; Ergin, T.; Espigat, P.; Feinstein, F.; Fleury, P.; Fontaine, G.; Funk, S.; A. Gallant, Y.; Giebels, B.; Gillessen, S.; Goret, P.; Guy, J.; Hadjichristidis, C.; Häuser, M.; Heinzelmann, G.; Henri, G.; Hermann, G.; A. Hinton, J.; Hofmann, W.; Holleran, M.; Horns, D.; C. de Jager, O.; Jung, I.; Khélifi, B.; Komin, Nu.; Konopelko, A.; J. Latham, I.; Le Gallou, R.; Lemoine, Martin; Lemière, A.; Leroy, N.; Lohse, T.; Marcowith, A.; Masterson, C.; J. L. McComb, T.; de Naurois, M.; J. Nolan, S.; Noutsos, A.; J. Orford, K.; L. Osborne, J.; Ouchrif, M.; Panter, M.; Pelletier, G.; Pita, S.; Pohl, M.; Pühlhofer, G.; Punch, M.; C. Raubenheimer, B.; Raue, M.; Raux, J.; M. Rayner, S.; Redondo, I.; Reimer, A.; Reimer, O.; Ripken, J.; Rivoal, M.; Rob, L.; Rolland, L.; Rowell, Gavin; Sahakian, V.; Saugé, L.; Schlenker, S.; Schlickeiser, R.; Schuster, C.; Schwanke, U.; Siewert, M.; Sol, H.; Steenkamp, R.; Stegmann, C.; Tavernet, J.-P.; G. Théoret, C.; Tluczykont, M.; J. van der Walt, D.; Vasileiadis, G.; Vincent, P.; Visser, Bart; J. Völk, H.; J. Wagner, S.

doi:10.1051/0004-6361:200400055

Public

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

Published in Astronomy and Astrophysics • Sep 10, 2004

Authors:

F. Aharonian

A. G. Akhperjanian

K. M. Aye

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 -2.2 0.09 0.15 and a flux above the 165 GeV threshold of (1.82 ...

Subject

Physics

Cherenkov radiation

Gamma ray

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