Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S
A. Abramowski
(1)
,
Fabio Acero
(2)
,
F. Aharonian
(3, 4, 5)
,
A. G. Akhperjanian
(5, 6)
,
G. Anton
(7)
,
S. Balenderan
(8)
,
Agnès Balzer
(9, 10)
,
A. Barnacka
(11)
,
Y. Becherini
(12, 13)
,
J. Becker Tjus
(14)
,
K. Bernlöhr
(15, 3)
,
E. Birsin
(15)
,
J. Biteau
(12)
,
A. Bochow
(3)
,
C. Boisson
(16)
,
J. Bolmont
(17)
,
P. Bordas
(18)
,
J. Brucker
(7)
,
F. Brun
(12)
,
P. Brun
(19)
,
T. Bulik
(20)
,
S. Carrigan
(3)
,
S. Casanova
(21)
,
M. Cerruti
(16)
,
P. M. Chadwick
(8)
,
R. C. G. Chaves
,
A. Cheesebrough
(8)
,
S. Colafrancesco
(22)
,
G. Cologna
(23)
,
J. Conrad
(24)
,
C. Couturier
(17)
,
M. Dalton
(15, 25)
,
M. K. Daniel
(8)
,
I. D. Davids
(26)
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B. Degrange
(12)
,
C. Deil
(3)
,
P. Dewilt
(27)
,
H. J. Dickinson
(24)
,
A. Djannati-Ataï
(28)
,
W. Domainko
(3)
,
L. O'C. Drury
(4)
,
G. Dubus
(29)
,
K. Dutson
(30)
,
J. Dyks
(20)
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M. Dyrda
(31)
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K. Egberts
(32)
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P. Eger
(7)
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P. Espigat
(13)
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L. Fallon
(4)
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C. Farnier
(24)
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S. Fegan
(12)
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F. Feinstein
(2)
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M. V. Fernandes
(1)
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D. Fernandez
(2)
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A. Fiasson
(33)
,
G. Fontaine
(12)
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A. Förster
(3)
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M. Füssling
(15)
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M. Gajdus
(15)
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Y. A. Gallant
(2)
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T. Garrigoux
(17)
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H. Gast
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B. Giebels
(12)
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J. F. Glicenstein
(19)
,
B. Glück
(7)
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D. Göring
(7)
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M. -H. Grondin
(3, 34)
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S. Häffner
(7)
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J. D. Hague
(35)
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J. Hahn
(3)
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D. Hampf
(1)
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J. Harris
(8)
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S. Heinz
(7)
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G. Heinzelmann
(1)
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G. Henri
(29)
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G. Hermann
(3)
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A. Hillert
(3)
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J. A. Hinton
(30)
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W. Hofmann
(3)
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P. Hofverberg
(3)
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M. Holler
(10)
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D. Horns
(1)
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A. Jacholkowska
(17)
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C. Jahn
(7)
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M. Jamrozy
(36)
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I. Jung
(7)
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M. A. Kastendieck
(1)
,
K. Katarzyński
(37)
,
U. Katz
(38)
,
S. Kaufmann
(23)
,
B. Khélifi
(12)
,
S. Klepser
(9)
,
D. Klochkov
(39)
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W. Kluźniak
(37)
,
T. Kneiske
(1)
,
Nu. Komin
(33)
,
K. Kosack
(19)
,
R. Kossakowski
(33)
,
F. Krayzel
(33)
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P. P. Krüger
(3, 21)
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H. Laffon
(12)
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G. Lamanna
(33)
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J. Lefaucheur
(13)
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M. Lemoine-Goumard
(25)
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J. -P. Lenain
(13)
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D. Lennarz
(3)
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T. Lohse
(15)
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A. Lopatin
(38)
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C. -C. Lu
(3)
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V. Marandon
(3)
,
Alexandre Marcowith
(2)
,
Julien Masbou
(33)
,
G. Maurin
(33)
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N. Maxted
(27)
,
M. Mayer
(10)
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T. J. L. Mccomb
(8)
,
M. C. Medina
(19)
,
J. Méhault
(2, 25)
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U. Menzler
(40)
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R. Moderski
(41)
,
M. Mohamed
(23)
,
Emmanuel Moulin
(19)
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C. L. Naumann
(17)
,
M. Naumann-Godo
(19)
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M. de Naurois
(12)
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D. Nedbal
(42)
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D. Nekrassov
(3)
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N. Nguyen
(1)
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J. Niemiec
(31)
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S. J. Nolan
(8)
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S. Ohm
(3, 30)
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E. de Oña Wilhelmi
(3)
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B. Opitz
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M. Ostrowski
(36)
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I. Oya
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M. Panter
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R. D. Parsons
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M. Paz Arribas
(15)
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N. W. Pekeur
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G. Pelletier
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J. Perez
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P. -O. Petrucci
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B. Peyaud
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S. Pita
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G. Pühlhofer
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M. Punch
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A. Quirrenbach
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M. Raue
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A. Reimer
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O. Reimer
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Matthieu Renaud
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R. de Los Reyes
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F. Rieger
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J. Ripken
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L. Rob
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S. Rosier-Lees
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G. Rowell
(27)
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B. Rudak
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C. B. Rulten
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V. Sahakian
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D. A. Sanchez
(3)
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A. Santangelo
(39)
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R. Schlickeiser
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A. Schulz
(9)
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U. Schwanke
(15)
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S. Schwarzburg
(39)
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S. Schwemmer
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F. Sheidaei
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J. L. Skilton
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H. Sol
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G. Spengler
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R. Steenkamp
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C. Stegmann
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K. Stycz
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J. -P. Tavernet
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R. Terrier
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M. Tluczykont
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C. Trichard
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K. Valerius
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C. van Eldik
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George Vasileiadis
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C. Venter
(21)
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A. Viana
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P. Vincent
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H. J. Völk
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F. Volpe
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S. Vorobiov
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M. Vorster
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S. J. Wagner
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M. Ward
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R. White
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A. Wierzcholska
(36)
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D. Wouters
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M. Zacharias
(14)
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A. Zajczyk
(2, 20)
,
A. A. Zdziarski
(20)
,
A. Zech
(16)
,
H. -S. Zechlin
(1)
1
Institut für Experimentalphysik [Hamburg]
2 LUPM - Laboratoire Univers et Particules de Montpellier
3 MPIK - Max-Planck-Institut für Kernphysik
4 DIAS - Dublin Institute for Advanced Studies
5 NAS RA - National Academy of Sciences of the Republic of Armenia [Yerevan]
6 Yerevan Physics Institute
7 FAU - Friedrich-Alexander Universität Erlangen-Nürnberg = University of Erlangen-Nuremberg
8 Department of Physics [Durham University]
9 DESY - Deutsches Elektronen-Synchrotron [Zeuthen]
10 University of Potsdam = Universität Potsdam
11 Nicolaus Copernicus University [Toruń]
12 LLR - Laboratoire Leprince-Ringuet
13 APC (UMR_7164) - AstroParticule et Cosmologie
14 Astronomisches Institut der Ruhr-Universität Bochum
15 HU Berlin - Humboldt-Universität zu Berlin = Humboldt University of Berlin = Université Humboldt de Berlin
16 LUTH (UMR_8102) - Laboratoire Univers et Théories
17 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
18 IAAT - Institut für Astronomie und Astrophysik [Tübingen]
19 CEA - CEA- Saclay
20 Astronomical Observatory [Warsaw]
21 NWU - North-West University [Potchefstroom]
22 WITS - University of the Witwatersrand [Johannesburg]
23 ZAH - Zentrum für Astronomie der Universität Heidelberg
24 Oskar Klein Centre [Stockholm]
25 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
26 NUST - Namibia University of Science and Technology
27 University of South Australia [Adelaide]
28 APC - AHE - APC - Astrophysique des Hautes Energies
29 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
30 Department of Physics and Astronomy [Leicester]
31 IFJ - Instytut Fizyki Jądrowej PAN
32 Leopold Franzens Universität Innsbruck - University of Innsbruck
33 LAPP - Laboratoire d'Annecy de Physique des Particules
34 Universität Heidelberg [Heidelberg] = Heidelberg University
35 MPIA - Max Planck Institute for Astronomy
36 UJ - Uniwersytet Jagielloński w Krakowie = Jagiellonian University
37 TCfA - Torun Centre for Astronomy
38 Physikalisches Institut [Erlangen]
39 Eberhard Karls Universität Tübingen = University of Tübingen
40 ITP4 - Institut für Theoretische Physik IV [Bochum]
41 Space Research Centre [Torun]
42 Astronomical Institute of Charles University
43 Space Research Centre [Leicester]
2 LUPM - Laboratoire Univers et Particules de Montpellier
3 MPIK - Max-Planck-Institut für Kernphysik
4 DIAS - Dublin Institute for Advanced Studies
5 NAS RA - National Academy of Sciences of the Republic of Armenia [Yerevan]
6 Yerevan Physics Institute
7 FAU - Friedrich-Alexander Universität Erlangen-Nürnberg = University of Erlangen-Nuremberg
8 Department of Physics [Durham University]
9 DESY - Deutsches Elektronen-Synchrotron [Zeuthen]
10 University of Potsdam = Universität Potsdam
11 Nicolaus Copernicus University [Toruń]
12 LLR - Laboratoire Leprince-Ringuet
13 APC (UMR_7164) - AstroParticule et Cosmologie
14 Astronomisches Institut der Ruhr-Universität Bochum
15 HU Berlin - Humboldt-Universität zu Berlin = Humboldt University of Berlin = Université Humboldt de Berlin
16 LUTH (UMR_8102) - Laboratoire Univers et Théories
17 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
18 IAAT - Institut für Astronomie und Astrophysik [Tübingen]
19 CEA - CEA- Saclay
20 Astronomical Observatory [Warsaw]
21 NWU - North-West University [Potchefstroom]
22 WITS - University of the Witwatersrand [Johannesburg]
23 ZAH - Zentrum für Astronomie der Universität Heidelberg
24 Oskar Klein Centre [Stockholm]
25 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
26 NUST - Namibia University of Science and Technology
27 University of South Australia [Adelaide]
28 APC - AHE - APC - Astrophysique des Hautes Energies
29 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
30 Department of Physics and Astronomy [Leicester]
31 IFJ - Instytut Fizyki Jądrowej PAN
32 Leopold Franzens Universität Innsbruck - University of Innsbruck
33 LAPP - Laboratoire d'Annecy de Physique des Particules
34 Universität Heidelberg [Heidelberg] = Heidelberg University
35 MPIA - Max Planck Institute for Astronomy
36 UJ - Uniwersytet Jagielloński w Krakowie = Jagiellonian University
37 TCfA - Torun Centre for Astronomy
38 Physikalisches Institut [Erlangen]
39 Eberhard Karls Universität Tübingen = University of Tübingen
40 ITP4 - Institut für Theoretische Physik IV [Bochum]
41 Space Research Centre [Torun]
42 Astronomical Institute of Charles University
43 Space Research Centre [Leicester]
Fabio Acero
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F. Aharonian
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Y. Becherini
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K. Bernlöhr
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S. Casanova
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M. Cerruti
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R. C. G. Chaves
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G. Dubus
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S. Fegan
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A. Fiasson
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D. Horns
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M. Jamrozy
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I. Jung
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U. Katz
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B. Khélifi
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S. Klepser
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Nu. Komin
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K. Kosack
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R. Kossakowski
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M. Lemoine-Goumard
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J. -P. Lenain
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T. Lohse
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V. Marandon
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Alexandre Marcowith
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Julien Masbou
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G. Maurin
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Emmanuel Moulin
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M. de Naurois
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J. Niemiec
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M. Punch
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A. Reimer
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Matthieu Renaud
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U. Schwanke
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C. van Eldik
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George Vasileiadis
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C. Venter
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A. Wierzcholska
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M. Zacharias
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A. Zech
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Abstract
Gamma-ray line signatures can be expected in the very-high-energy (VHE; E_\gamma > 100 GeV) domain due to self-annihilation or decay of dark matter (DM) particles in space. Such a signal would be readily distinguishable from astrophysical \gamma-ray sources that in most cases produce continuous spectra which span over several orders of magnitude in energy. Using data collected with the H.E.S.S. \gamma-ray instrument, upper limits on line-like emission are obtained in the energy range between ~500 GeV and ~25 TeV for the central part of the Milky Way halo and for extragalactic observations, complementing recent limits obtained with the Fermi-LAT instrument at lower energies. No statistically significant signal could be found. For monochromatic \gamma-ray line emission, flux limits of (2x10^-7 - 2x10^-5) m^-2 s^-1 sr^-1 and (1x10^-8 - 2x10^-6) m^-2 s^-1 sr^-1 are obtained for the central part of the Milky Way halo and extragalactic observations, respectively. For a DM particle mass of 1 TeV, limits on the velocity-averaged DM annihilation cross section < \sigma v >(\chi\chi -> \gamma\gamma) reach ~10^-27 cm^3 s^-1, based on the Einasto parametrization of the Galactic DM halo density profile.
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