Constraints on the multi-TeV particle population in the Coma Galaxy Cluster with H.E.S.S. observations

F. Aharonian; A.G. Akhperjanian; G. Anton; U. Barres de Almeida; A.R. Bazer-Bachi; Y. Becherini; B. Behera; K. Bernlöhr; C. Boisson; A. Bochow; V. Borrel; E. Brion; J. Brucker; P. Brun; R. Bühler; T. Bulik; I. Büsching; T. Boutelier; P.M. Chadwick; A. Charbonnier; R.C.G. Chaves; A. Cheesebrough; L.-M. Chounet; A.C. Clapson; G. Coignet; 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; J. Dyks; M. Dyrda; K. Egberts; D. Emmanoulopoulos; P. Espigat; C. Farnier; F. Feinstein; A. Fiasson; A. Förster; G. Fontaine; M. Füssling; S. Gabici; Y.A. Gallant; L. Gérard; B. Giebels; J.F. Glicenstein; B. Glück; P. Goret; D. Göhring; D. Hauser; M. Hauser; S. Heinz; G. Heinzelmann; G. Henri; G. Hermann; J.A. Hinton; A. Hoffmann; W. Hofmann; M. Holleran; S. Hoppe; D. Horns; S. Inoue; A. Jacholkowska; O.C. de Jager; I. Jung; K. Katarzy'Nski; U. Katz; S. Kaufmann; E. Kendziorra; M. Kerschhaggl; D. Khangulyan; B. Khélifi; D. Keogh; W. Klu'Zniak; T. Kneiske; Nu. Komin; K. Kosack; G. Lamanna; J.-P. Lenain; T. Lohse; V. Marandon; J.M. Martin; O. Martineau-Huynh; A. Marcowith; D. Maurin; T.J.L. Mccomb; M.C. Medina; R. Moderski; Emmanuel Moulin; M. Naumann-Godo; M. de Naurois; D. Nedbal; D. Nekrassov; J. Niemiec; S.J. Nolan; S. Ohm; J.-F. Olive; E. de Oña Wilhelmi; K.J. Orford; M. Ostrowski; M. Panter; M. Paz Arribas; G. Pedaletti; G. Pelletier; P.-O. Petrucci; S. Pita; G. Pühlhofer; M. Punch; A. Quirrenbach; B.C. Raubenheimer; M. Raue; S.M. Rayner; M. Renaud; O. Reimer; F. Rieger; J. Ripken; L. Rob; S. Rosier-Lees; G. Rowell; B. Rudak; C.B. Rulten; J. Ruppel; V. Sahakian; A. Santangelo; R. Schlickeiser; F.M. Schöck; R. Schröder; U. Schwanke; S. Schwarzburg; S. Schwemmer; A. Shalchi; M. Sikora; J.L. Skilton; H. Sol; D. Spanglfoer; Ł. Stawarz; R. Steenkamp; C. Stegmann; G. Superina; A. Szostek; P.H. Tam; J.-P. Tavernet; R. Terrier; O. Tibolla; M. Tluczykont; C. van Eldik; G. Vasileiadis; C. Venter; L. Venter; J.P. Vialle; P. Vincent; M. Vivier; H.J. Völk; F. Volpe; S.J. Wagner; M. Ward; A.A. Zdziarski; A. Zech

doi:10.1051/0004-6361/200912086

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Constraints on the multi-TeV particle population in the Coma Galaxy Cluster with H.E.S.S. observations

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Constraints on the multi-TeV particle population in the Coma Galaxy Cluster with H.E.S.S. observations

F. Aharonian, A.G. Akhperjanian, G. Anton, U. Barres de Almeida, A.R. Bazer-Bachi, Y. Becherini, B. Behera, K. Bernlöhr, C. Boisson, A. Bochow, …

Astronomy & Astrophysics - A&A, Vol.502, pp.437-443

2009

DOI: https://doi.org/10.1051/0004-6361/200912086

Résumé

gamma rays: observations

galaxies: clusters: individual: Coma (ACO1656)

The H.E.S.S. (High Energy Stereoscopic System) telescopes observed Coma for ~8hr in a search for gamma-ray emission at energies >1TeV. The large 3.5deg FWHM field of view of H.E.S.S. is ideal for viewing a range of targets at various sizes including the Coma cluster core, the radio-relic (1253+275) and merger/infall (NGC 4839) regions to the southwest, and features greater than deg away. No evidence for point-like nor extended TeV gamma-ray emission was found and upper limits to the TeV flux F(E) for E>1, >5, and >10TeV were set for the Coma core and other regions. Converting these limits to an energy flux E^2F(E) the lowest or most constraining is the E>5TeV upper limit for the Coma core (0.2deg radius) at ~8Crab flux units or ~10^{-13}ph cm^{-2} s^{-1}. The upper limits for the Coma core were compared with a prediction for the gamma-ray emission from proton--proton interactions, the level of which ultimately scales with the mass of the Coma cluster. A direct constraint using our most stringent limit for E>5 TeV, on the total energy content in non-thermal protons with injection energy spectrum proportional to E^{-2.1} and spatial distribution following the thermal gas in the cluster, is found to be ~0.2 times the thermal energy, or ~10^{62}erg. The E>5 TeV gamma-ray threshold in this case corresponds to cosmic-ray proton energies >50TeV. Our upper limits rule out the most optimistic theoretical models for gamma ray emission from clusters and complement radio observations which constrain the cosmic ray content in clusters at significantly lower proton energies, subject to assumptions on the magnetic field strength.

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Titre: Constraints on the multi-TeV particle population in the Coma Galaxy Cluster with H.E.S.S. observations
Créateurs - sans rôle: F. Aharonian - Dublin Institute For Advanced Studies
A.G. Akhperjanian - A. Alikhanyan National Laboratory
G. Anton - Friedrich-Alexander-Universität Erlangen-Nürnberg
U. Barres de Almeida
A.R. Bazer-Bachi - Université Toulouse III - Paul Sabatier
Y. Becherini - Centre National de la Recherche Scientifique
B. Behera - Heidelberg University
K. Bernlöhr - Max Planck Institute for Nuclear Physics
C. Boisson - Centre National de la Recherche Scientifique
A. Bochow - Max Planck Institute for Nuclear Physics
V. Borrel - Université Toulouse III - Paul Sabatier
E. Brion - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
J. Brucker - Friedrich-Alexander-Universität Erlangen-Nürnberg
P. Brun - CEA Paris-Saclay
R. Bühler - Max Planck Institute for Nuclear Physics
T. Bulik - Nicolaus Copernicus Astronomical Center
I. Büsching - North-West University
T. Boutelier - Centre National de la Recherche Scientifique
P.M. Chadwick - Durham University
A. Charbonnier - Sorbonne Université
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
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 - Durham University
A. Djannati-Ataï - APC - Astrophysique des Hautes Energies
W. Domainko - Max Planck Institute for Nuclear Physics
L.O'C. Drury
F. Dubois - Laboratoire d’Annecy de Physique des Particules
G. Dubus - Université Joseph Fourier
J. Dyks - Nicolaus Copernicus Astronomical Center
M. Dyrda - Institute of Nuclear Physics, Polish Academy of Sciences
K. Egberts - Max Planck Institute for Nuclear Physics
D. Emmanoulopoulos - Heidelberg University
P. Espigat - Université Paris Cité
C. Farnier - Laboratoire de Physique Théorique
F. Feinstein - Centre National de la Recherche Scientifique
A. Fiasson - Laboratoire de Physique Théorique
A. Förster - Max Planck Institute for Nuclear Physics
G. Fontaine - Laboratoire Leprince-Ringuet
M. Füssling
S. Gabici - Dublin Institute For Advanced Studies
Y.A. Gallant - Laboratoire de Physique Théorique
L. Gérard - Université Paris Cité
B. Giebels - Laboratoire Leprince-Ringuet
J.F. Glicenstein - CEA Paris-Saclay
B. Glück - Friedrich-Alexander-Universität Erlangen-Nürnberg
P. Goret - Institut de Recherche sur les Lois Fondamentales de l'Univers
D. Göhring - Friedrich-Alexander-Universität Erlangen-Nürnberg
D. Hauser - Heidelberg University
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 Leeds
A. Hoffmann - University of Tübingen
W. Hofmann - Max Planck Institute for Nuclear Physics
M. Holleran - North-West University
S. Hoppe - Max Planck Institute for Nuclear Physics
D. Horns - Universität Hamburg
S. Inoue - Kyoto University
A. Jacholkowska - Laboratoire de Physique Nucléaire et de Hautes Énergies
O.C. de Jager - North-West University
I. Jung - Friedrich-Alexander-Universität Erlangen-Nürnberg
K. Katarzy'Nski
U. Katz - Friedrich-Alexander-Universität Erlangen-Nürnberg
S. Kaufmann - Heidelberg University
E. Kendziorra - University of Tübingen
M. Kerschhaggl - Humboldt-Universität zu Berlin
D. Khangulyan - Max Planck Institute for Nuclear Physics
B. Khélifi - Centre National de la Recherche Scientifique
D. Keogh - Durham University
W. Klu'Zniak
T. Kneiske - Universität Hamburg
Nu. Komin - Institut de Recherche sur les Lois Fondamentales de l'Univers
K. Kosack - Max Planck Institute for Nuclear Physics
G. Lamanna - Laboratoire d’Annecy de Physique des Particules
J.-P. Lenain - Université Paris Cité
T. Lohse - Humboldt-Universität zu Berlin
V. Marandon - Observatoire de Paris
J.M. Martin - Centre National de la Recherche Scientifique
O. Martineau-Huynh - Laboratoire de Physique Nucléaire et de Hautes Énergies
A. Marcowith - Laboratoire de Physique Théorique
D. Maurin - Laboratoire de Physique Nucléaire et de Hautes Énergies
T.J.L. Mccomb - Durham University
M.C. Medina - Centre National de la Recherche Scientifique
R. Moderski - Nicolaus Copernicus Astronomical Center
Emmanuel Moulin - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
M. Naumann-Godo - Centre National de la Recherche Scientifique
M. de Naurois - Laboratoire de Physique Nucléaire et de Hautes Énergies
D. Nedbal - Charles University
D. Nekrassov - Max Planck Institute for Nuclear Physics
J. Niemiec
S.J. Nolan
S. Ohm
J.-F. Olive - Centre d'étude spatiale des rayonnements
E. de Oña Wilhelmi - AstroParticule et Cosmologie
K.J. Orford
M. Ostrowski
M. Panter
M. Paz Arribas
G. Pedaletti
G. Pelletier
P.-O. Petrucci
S. Pita - AstroParticule et Cosmologie
G. Pühlhofer
M. Punch - AstroParticule et Cosmologie
A. Quirrenbach
B.C. Raubenheimer
M. Raue
S.M. Rayner
M. Renaud - AstroParticule et Cosmologie
O. Reimer
F. Rieger
J. Ripken
L. Rob
S. Rosier-Lees - Laboratoire d’Annecy de Physique des Particules
G. Rowell
B. Rudak
C.B. Rulten
J. Ruppel
V. Sahakian
A. Santangelo
R. Schlickeiser
F.M. Schöck
R. Schröder
U. Schwanke
S. Schwarzburg
S. Schwemmer
A. Shalchi
M. Sikora
J.L. Skilton
H. Sol - Laboratoire Univers et Théories
D. Spanglfoer
Ł. Stawarz
R. Steenkamp
C. Stegmann
G. Superina - Laboratoire Leprince-Ringuet
A. Szostek
P.H. Tam
J.-P. Tavernet - Laboratoire de Physique Nucléaire et de Hautes Énergies
R. Terrier - AstroParticule et Cosmologie
O. Tibolla
M. Tluczykont
C. van Eldik
G. Vasileiadis - Laboratoire de Physique Théorique
C. Venter
L. Venter - Laboratoire Univers et Théories
J.P. Vialle - Laboratoire d’Annecy de Physique des Particules
P. Vincent - Laboratoire de Physique Nucléaire et de Hautes Énergies
M. Vivier
H.J. Völk
F. Volpe - Laboratoire Leprince-Ringuet
S.J. Wagner
M. Ward
A.A. Zdziarski
A. Zech - Laboratoire Univers et Théories
Détails de publication: Astronomy & Astrophysics - A&A, Vol.502, pp.437-443
Identifiants: 99150306509311
Unité académique: Université de Montpellier
Langue: English
Type de ressource: Journal article
Champs locaux: in2p3-00402427