Very-high-energy gamma-ray emission from the direction of the Galactic globular cluster Terzan 5

A. Abramowski; Fabio Acero; F. Aharonian; A. G. Akhperjanian; G. Anton; Agnès Balzer; A. Barnacka; U. Barres de Almeida; Y. Becherini; J. Becker; B. Behera; K. Bernloehr; A. Bochow; C. Boisson; J. Bolmont; P. Bordas; J. Brucker; F. Brun; P. Brun; T. Bulik; I. Buesching; S. Carrigan; S. Casanova; M. Cerruti; P. M. Chadwick; A. Charbonnier; R. C. G. Chaves; A. Cheesebrough; L. -M. Chounet; A. C. Clapson; G. Coignet; G. Cologna; J. Conrad; M. Dalton; M. K. Daniel; I. D. Davids; B. Degrange; C. Deil; H. J. Dickinson; A. Djannati-Ataï; W. Domainko; L. O'C. Drury; F. Dubois; G. Dubus; K. Dutson; J. Dyks; M. Dyrda; K. Egberts; P. Eger; P. Espigat; L. Fallon; C. Farnier; S. Fegan; F. Feinstein; M. V. Fernandes; A. Fiasson; G. Fontaine; A. Foerster; M. Fuessling; Y. A. Gallant; H. Gast; L. Gerard; D. Gerbig; B. Giebels; J. F. Glicenstein; B. Glueck; P. Goret; D. Goering; S. Haeffner; J. D. Hague; D. Hampf; M. Hauser; S. Heinz; G. Heinzelmann; G. Henri; G. Hermann; J. A. Hinton; A. Hoffmann; W. Hofmann; P. Hofverberg; M. Holler; D. Horns; A. Jacholkowska; O. C. de Jager; C. Jahn; M. Jamrozy; I. Jung; M. A. Kastendieck; K. Katarzynski; U. Katz; S. Kaufmann; D. Keogh; D. Khangulyan; B. Khelifi; D. Klochkov; W. Kluzniak; T. Kneiske; Nu. Komin; K. Kosack; R. Kossakowski; H. Laffon; G. Lamanna; D. Lennarz; T. Lohse; A. Lopatin; C. -C. Lu; V. Marandon; Alexandre Marcowith; Julien Masbou; D. Maurin; N. Maxted; T. J. L. Mccomb; M. C. Medina; J. Mehault; N. Nguyen; R. Moderski; Emmanuel Moulin; C. L. Naumann; M. Naumann-Godo; M. de Naurois; D. Nedbal; D. Nekrassov; B. Nicholas; J. Niemiec; S. J. Nolan; S. Ohm; E. de Ona Wilhelmi; B. Opitz; M. Ostrowski; I. Oya; M. Panter; M. Paz Arribas; G. Pedaletti; G. Pelletier; P. -O. Petrucci; S. Pita; G. Puehlhofer; M. Punch; A. Quirrenbach; M. Raue; S. M. Rayner; A. Reimer; O. Reimer; Matthieu Renaud; R. de Los Reyes; F. Rieger; J. Ripken; L. Rob; S. Rosier-Lees; G. Rowell; B. Rudak; C. B. Rulten; J. Ruppel; F. Ryde; V. Sahakian; A. Santangelo; R. Schlickeiser; F. M. Schoeck; A. Schulz; U. Schwanke; S. Schwarzburg; S. Schwemmer; M. Sikora; J. L. Skilton; H. Sol; G. Spengler; L. Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; A. Szostek; J. -P. Tavernet; R. Terrier; M. Tluczykont; K. Valerius; C. van Eldik; George Vasileiadis; C. Venter; J. P. Vialle; A. Viana; P. Vincent; H. J. Voelk; F. Volpe; S. Vorobiov; M. Vorster; S. J. Wagner; M. Ward; R. White; A. Wierzcholska; M. Zacharias; A. Zajczyk; A. A. Zdziarski; A. Zech; H. -S. Zechlin

doi:10.1051/0004-6361/201117171

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Very-high-energy gamma-ray emission from the direction of the Galactic globular cluster Terzan 5

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Very-high-energy gamma-ray emission from the direction of the Galactic globular cluster Terzan 5

A. Abramowski, Fabio Acero, F. Aharonian, A. G. Akhperjanian, G. Anton, Agnès Balzer, A. Barnacka, U. Barres de Almeida, Y. Becherini, J. Becker, …

Astronomy & Astrophysics - A&A, Vol.531

2011

DOI: https://doi.org/10.1051/0004-6361/201117171

Abstract

The H.E.S.S. very-high-energy (VHE, E > 0.1 TeV) gamma-ray telescope system has discovered a new source, HESS J1747-248. The measured integral flux is (1.2 +/- 0.3) \times 10^-12 cm-2 s-1 above 440 GeV for a power-law photon spectral index of 2.5 +/- 0.3 stat +/- 0.2 sys. The VHE gamma-ray source is located in the close vicinity of the Galactic globular cluster Terzan 5 and extends beyond the H.E.S.S. point spread function (0.07 degree). The probability of a chance coincidence with Terzan 5 and an unrelated VHE source is quite low (~ 10^-4). With the largest population of identified millisecond pulsars (msPSRs), a very high core stellar density and the brightest GeV range flux as measured by Fermi-LAT, Terzan 5 stands out among Galactic globular clusters. The properties of the VHE source are briefly discussed in the context of potential emission mechanisms, notably in relation to msPSRs. Interpretation of the available data accommodates several possible origins for this VHE gamma-ray source, although none of them offers a satisfying explanation of its peculiar morphology.

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Title: Very-high-energy gamma-ray emission from the direction of the Galactic globular cluster Terzan 5
Creators - without role: A. Abramowski - Universität Hamburg
Fabio Acero - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
F. Aharonian - Max Planck Institute for Nuclear Physics
A. G. Akhperjanian - National Academy of Sciences of Armenia
G. Anton - Friedrich-Alexander-Universität Erlangen-Nürnberg
Agnès Balzer - Friedrich-Alexander-Universität Erlangen-Nürnberg
A. Barnacka - Nicolaus Copernicus Astronomical Center
U. Barres de Almeida - Durham University
Y. Becherini - Université Paris Cité
J. Becker - Ruhr University Bochum
B. Behera - Heidelberg University
K. Bernloehr
A. Bochow - Max Planck Institute for Nuclear Physics
C. Boisson - Délégation Paris 7
J. Bolmont - Laboratoire de Physique Nucléaire et de Hautes Énergies
P. Bordas - University of Tübingen
J. Brucker - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Brun - École Polytechnique
P. Brun - Institut de Recherche sur les Lois Fondamentales de l'Univers
T. Bulik - University of Warsaw
I. Buesching
S. Carrigan - Max Planck Institute for Nuclear Physics
S. Casanova - Ruhr University Bochum
M. Cerruti - Délégation Paris 7
P. M. Chadwick - Durham University
A. Charbonnier - Laboratoire de Physique Nucléaire et de Hautes Énergies
R. C. G. Chaves - Max Planck Institute for Nuclear Physics
A. Cheesebrough - Durham University
L. -M. Chounet - Laboratoire Leprince-Ringuet
A. C. Clapson - Max Planck Institute for Nuclear Physics
G. Coignet - Laboratoire d’Annecy de Physique des Particules
G. Cologna - Heidelberg University
J. Conrad - Stockholm University
M. Dalton - Humboldt-Universität zu Berlin
M. K. Daniel - Durham University
I. D. Davids - University of Namibia
B. Degrange - École Polytechnique
C. Deil - Max Planck Institute for Nuclear Physics
H. J. Dickinson - Stockholm University
A. Djannati-Ataï - Laboratoire AstroParticule et Cosmologie
W. Domainko - Max Planck Institute for Nuclear Physics
L. O'C. Drury
F. Dubois - Centre National de la Recherche Scientifique
G. Dubus - Université Joseph Fourier
K. Dutson - University of Leicester
J. Dyks - Nicolaus Copernicus Astronomical Center
M. Dyrda - Institute of Nuclear Physics, Polish Academy of Sciences
K. Egberts - Universität Innsbruck
P. Eger - Friedrich-Alexander-Universität Erlangen-Nürnberg
P. Espigat - Université Paris Cité
L. Fallon - Dublin Institute For Advanced Studies
C. Farnier - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
S. Fegan - Laboratoire Leprince-Ringuet
F. Feinstein - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. V. Fernandes - Universität Hamburg
A. Fiasson - Laboratoire d’Annecy de Physique des Particules
G. Fontaine - Laboratoire Leprince-Ringuet
A. Foerster
M. Fuessling
Y. A. Gallant - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
H. Gast - Max Planck Institute for Nuclear Physics
L. Gerard - Université Paris Cité
D. Gerbig - Ruhr University Bochum
B. Giebels - Laboratoire Leprince-Ringuet
J. F. Glicenstein - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
B. Glueck
P. Goret - Institut de Recherche sur les Lois Fondamentales de l'Univers
D. Goering
S. Haeffner
J. D. Hague - Max Planck Institute for Nuclear Physics
D. Hampf - Universität Hamburg
M. Hauser - Heidelberg University
S. Heinz - Friedrich-Alexander-Universität Erlangen-Nürnberg
G. Heinzelmann - Universität Hamburg
G. Henri - Centre National de la Recherche Scientifique
G. Hermann - Max Planck Institute for Nuclear Physics
J. A. Hinton - University of Leicester
A. Hoffmann - University of Tübingen
W. Hofmann - Max Planck Institute for Nuclear Physics
P. Hofverberg - Max Planck Institute for Nuclear Physics
M. Holler - Friedrich-Alexander-Universität Erlangen-Nürnberg
D. Horns - Universität Hamburg
A. Jacholkowska - Laboratoire de Physique Nucléaire et de Hautes Énergies
O. C. de Jager - North-West University
C. Jahn - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Jamrozy - Jagiellonian University
I. Jung - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. A. Kastendieck - Universität Hamburg
K. Katarzynski - Nicolaus Copernicus University
U. Katz - Friedrich-Alexander-Universität Erlangen-Nürnberg
S. Kaufmann - Heidelberg University
D. Keogh - Durham University
D. Khangulyan - Max Planck Institute for Nuclear Physics
B. Khelifi - École Polytechnique
D. Klochkov - University of Tübingen
W. Kluzniak - Nicolaus Copernicus Astronomical Center
T. Kneiske - Universität Hamburg
Nu. Komin - Laboratoire d’Annecy de Physique des Particules
K. Kosack - Institut de Recherche sur les Lois Fondamentales de l'Univers
R. Kossakowski - Laboratoire d’Annecy de Physique des Particules
H. Laffon - Laboratoire Leprince-Ringuet
G. Lamanna - Institut National de Physique Nucléaire et de Physique des Particules
D. Lennarz - Max Planck Institute for Nuclear Physics
T. Lohse - Humboldt-Universität zu Berlin
A. Lopatin - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. -C. Lu - Max Planck Institute for Nuclear Physics
V. Marandon - Université Paris Cité
Alexandre Marcowith - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
Julien Masbou - Institut National de Physique Nucléaire et de Physique des Particules
D. Maurin - Centre National de la Recherche Scientifique
N. Maxted - University of Adelaide
T. J. L. Mccomb - Durham University
M. C. Medina - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
J. Mehault - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
N. Nguyen - Universität Hamburg
R. Moderski - Nicolaus Copernicus Astronomical Center
Emmanuel Moulin - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
C. L. Naumann - Sorbonne Université
M. Naumann-Godo - CEA Paris-Saclay
M. de Naurois - École Polytechnique
D. Nedbal - Charles University
D. Nekrassov - Max Planck Institute for Nuclear Physics
B. Nicholas - University of Adelaide
J. Niemiec - Institute of Nuclear Physics, Polish Academy of Sciences
S. J. Nolan - Durham University
S. Ohm - Max Planck Institute for Nuclear Physics
E. de Ona Wilhelmi - Max Planck Institute for Nuclear Physics
B. Opitz - Universität Hamburg
M. Ostrowski - Jagiellonian University
I. Oya
M. Panter - Max Planck Institute for Nuclear Physics
M. Paz Arribas - Humboldt-Universität zu Berlin
G. Pedaletti - Heidelberg University
G. Pelletier - Centre National de la Recherche Scientifique
P. -O. Petrucci - Université Joseph Fourier
S. Pita - Université Paris Cité
G. Puehlhofer
M. Punch - Université Paris Cité
A. Quirrenbach - Heidelberg University
M. Raue - Universität Hamburg
S. M. Rayner - Durham University
A. Reimer - Universität Innsbruck
O. Reimer - Universität Innsbruck
Matthieu Renaud - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
R. de Los Reyes
F. Rieger - Max Planck Institute for Nuclear Physics
J. Ripken - Stockholm University
L. Rob - Charles University
S. Rosier-Lees - Laboratoire d’Annecy de Physique des Particules
G. Rowell - University of Adelaide
B. Rudak - Nicolaus Copernicus Astronomical Center
C. B. Rulten - Durham University
J. Ruppel - Ruhr University Bochum
F. Ryde - KTH Royal Institute of Technology
V. Sahakian - A. Alikhanyan National Laboratory
A. Santangelo - University of Tübingen
R. Schlickeiser - Ruhr University Bochum
F. M. Schoeck
A. Schulz - Friedrich-Alexander-Universität Erlangen-Nürnberg
U. Schwanke - Humboldt-Universität zu Berlin
S. Schwarzburg - University of Tübingen
S. Schwemmer - Heidelberg University
M. Sikora - Nicolaus Copernicus Astronomical Center
J. L. Skilton - University of Leeds
H. Sol - Centre National de la Recherche Scientifique
G. Spengler - Humboldt-Universität zu Berlin
L. Stawarz
R. Steenkamp - University of Namibia
C. Stegmann - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Stinzing - Friedrich-Alexander-Universität Erlangen-Nürnberg
K. Stycz - Friedrich-Alexander-Universität Erlangen-Nürnberg
I. Sushch - Humboldt-Universität zu Berlin
A. Szostek - Jagiellonian University
J. -P. Tavernet - Laboratoire de Physique Nucléaire et de Hautes Énergies
R. Terrier - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
M. Tluczykont - Universität Hamburg
K. Valerius - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. van Eldik - Max Planck Institute for Nuclear Physics
George Vasileiadis - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
C. Venter - North-West University
J. P. Vialle - Institut National de Physique Nucléaire et de Physique des Particules
A. Viana - Institut de Recherche sur les Lois Fondamentales de l'Univers
P. Vincent - Sorbonne Université
H. J. Voelk
F. Volpe - Max Planck Institute for Nuclear Physics
S. Vorobiov - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Vorster - North-West University
S. J. Wagner - Heidelberg University
M. Ward - Durham University
R. White - University of Leicester
A. Wierzcholska - Jagiellonian University
M. Zacharias - Ruhr University Bochum
A. Zajczyk - Laboratoire Univers et Particules de Montpellier
A. A. Zdziarski - Nicolaus Copernicus Astronomical Center
A. Zech - Universität Hamburg
H. -S. Zechlin - Universität Hamburg
Publication Details: Astronomy & Astrophysics - A&A, Vol.531
Identifiers: 9938122109311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: in2p3-00607259