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

F. Aharonian; A.G. Akhperjanian; K.-M. Aye; A.R. Bazer-Bachi; M. Beilicke; W. Benbow; D. Berge; P. Berghaus; K. Bernlohr; O. Bolz; C. Boisson; C. Borgneier; F. Breitling; A.M. Brown; J. Bussons Gordo; P.M. Chadwick; V.R. Chitnis; L.-M. Chounet; R. Cornils; B. Degrange; A. Djannati-Atai; L.O'C. Drury; T. Ergin; P. Espigat; F. Feinstein; P. Fleury; G. Fontaine; S. Funk; Y. Gallant; B. Giebels; S. Gillessen; P. Goret; J. Guy; C. Hadjichristidis; M. Hauser; G. Heinzelmann; G. Henri; G. Hermann; M. Holleran; D. Horns; O.C. De Jager; I. Jung; B. Khelifi; Nu. Komin; A. Konopelko; I.J. Latham; R. Le Gallou; M. Lemoine; N. Leroy; T. Lohse; A. Marcowith; C. Masterson; T.J.L. Mccomb; M. De Naurois; S.J. Nolan; A. Noutsos; K.J. Orford; M. Ouchrif; M. Panter; G. Pelletier; S. Pita; M. Pohl; G. Puhlhofer; M. Punch; B.C. Raubenheimer; M. Raue; J. Raux; I. Redondo; A. Reimer; O. Reimer; J. Ripken; M. Rivoal; L. Rob; L. Rolland; G. Rowell; V. Sahakian; L. Sauge; S. Schlenker; C. Schuster; U. Schwanke; M. Siewert; H. Sol; R. Steenkamp; C. Stegmann; J.-P. Tavernet; C.G Theoret; M. Tluczykont; D.J. van Der Walt; G. Vasileiadis; P. Vincent; B. Visser; H.J. Volk; S.J. Wagner

doi:10.1051/0004-6361:200400055

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

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

F. Aharonian, A.G. Akhperjanian, K.-M. Aye, A.R. Bazer-Bachi, M. Beilicke, W. Benbow, D. Berge, P. Berghaus, K. Bernlohr, O. Bolz, …

Astronomy & Astrophysics - A&A, Vol.425, pp.L13-L17

2004

DOI: https://doi.org/10.1051/0004-6361:200400055

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 H.E.S.S. array of Cherenkov telescopes. The gamma-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 +/- 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.

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Title: Very high-energy gamma rays from the direction of Sagittarius A
Creators - without role: F. Aharonian - Max Planck Institute for Nuclear Physics
A.G. Akhperjanian - A. Alikhanyan National Laboratory
K.-M. Aye - Durham University
A.R. Bazer-Bachi - Université Toulouse III - Paul Sabatier
M. Beilicke - Universität Hamburg
W. Benbow - Max Planck Institute for Nuclear Physics
D. Berge - Max Planck Institute for Nuclear Physics
P. Berghaus - Collège de France
K. Bernlohr - Max Planck Institute for Nuclear Physics
O. Bolz - Max Planck Institute for Nuclear Physics
C. Boisson - Observatoire de Paris
C. Borgneier
F. Breitling - Humboldt-Universität zu Berlin
A.M. Brown - Durham University
J. Bussons Gordo - Université de Montpellier
P.M. Chadwick - Durham University
V.R. Chitnis - Sorbonne Université
L.-M. Chounet - Laboratoire Leprince-Ringuet
R. Cornils - Universität Hamburg
B. Degrange - École Polytechnique
A. Djannati-Atai - Physique Corpusculaire et Cosmologie
L.O'C. Drury
T. Ergin - Humboldt-Universität zu Berlin
P. Espigat - Collège de France
F. Feinstein - Université de Montpellier
P. Fleury - École Polytechnique
G. Fontaine - Laboratoire Leprince-Ringuet
S. Funk - Max Planck Institute for Nuclear Physics
Y. Gallant - Université de Montpellier
B. Giebels - Laboratoire Leprince-Ringuet
S. Gillessen - Max Planck Institute for Nuclear Physics
P. Goret - Direction des énergies
J. Guy - Centre National de la Recherche Scientifique
C. Hadjichristidis - Durham University
M. Hauser
G. Heinzelmann - Universität Hamburg
G. Henri - Centre National de la Recherche Scientifique
G. Hermann - Max Planck Institute for Nuclear Physics
M. Holleran - North-West University
D. Horns - Max Planck Institute for Nuclear Physics
O.C. De Jager
I. Jung - Max Planck Institute for Nuclear Physics
B. Khelifi - Max Planck Institute for Nuclear Physics
Nu. Komin - Humboldt-Universität zu Berlin
A. Konopelko - Max Planck Institute for Nuclear Physics
I.J. Latham - Durham University
R. Le Gallou
M. Lemoine - École Polytechnique
N. Leroy - École Polytechnique
T. Lohse - Humboldt-Universität zu Berlin
A. Marcowith - Laboratoire d'Analyse et d'Architecture des Systèmes
C. Masterson - Max Planck Institute for Nuclear Physics
T.J.L. Mccomb - Durham University
M. De Naurois - Laboratoire de Physique Nucléaire et de Hautes Énergies
S.J. Nolan - Durham University
A. Noutsos - Durham University
K.J. Orford - Durham University
M. Ouchrif - Sorbonne Université
M. Panter - Max Planck Institute for Nuclear Physics
G. Pelletier - Centre National de la Recherche Scientifique
S. Pita - Institut National de Physique Nucléaire et de Physique des Particules
M. Pohl - Ruhr University Bochum
G. Puhlhofer
M. Punch - Max Planck Institute for Nuclear Physics
B.C. Raubenheimer - North-West University
M. Raue - Max Planck Institute for Nuclear Physics
J. Raux - Max Planck Institute for Nuclear Physics
I. Redondo - Laboratoire Leprince-Ringuet
A. Reimer - Max Planck Institute for Nuclear Physics
O. Reimer - Max Planck Institute for Nuclear Physics
J. Ripken - Max Planck Institute for Nuclear Physics
M. Rivoal - Max Planck Institute for Nuclear Physics
L. Rob - Charles University
L. Rolland - Max Planck Institute for Nuclear Physics
G. Rowell - Max Planck Institute for Nuclear Physics
V. Sahakian - Max Planck Institute for Nuclear Physics
L. Sauge - Max Planck Institute for Nuclear Physics
S. Schlenker - Max Planck Institute for Nuclear Physics
C. Schuster - Max Planck Institute for Nuclear Physics
U. Schwanke - Max Planck Institute for Nuclear Physics
M. Siewert - Max Planck Institute for Nuclear Physics
H. Sol - Max Planck Institute for Nuclear Physics
R. Steenkamp - University of Namibia
C. Stegmann - Max Planck Institute for Nuclear Physics
J.-P. Tavernet - Max Planck Institute for Nuclear Physics
C.G Theoret - Max Planck Institute for Nuclear Physics
M. Tluczykont - Max Planck Institute for Nuclear Physics
D.J. van Der Walt
G. Vasileiadis - Max Planck Institute for Nuclear Physics
P. Vincent - Max Planck Institute for Nuclear Physics
B. Visser - Max Planck Institute for Nuclear Physics
H.J. Volk - Max Planck Institute for Nuclear Physics
S.J. Wagner - Max Planck Institute for Nuclear Physics
Publication Details: Astronomy & Astrophysics - A&A, Vol.425, pp.L13-L17
Identifiers: 9939872209311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: in2p3-00022258