A. Abramowski
Search for Photon-Linelike Signatures from Dark Matter Annihilations with H.E.S.S
Abramowski, A.; Acero, F.; Aharonian, F.; Akhperjanian, A.G.; Anton, G.; Balenderan, S.; Balzer, A.; Barnacka, A.; Becherini, Y.; Becker Tjus, J.; Bernlöhr, K.; Birsin, E.; Biteau, J.; Bochow, A.; Boisson, C.; Bolmont, J.; Bordas, P.; Brucker, J.; Brun, F.; Brun, P.; Bulik, T.; Carrigan, S.; Casanova, S.; Cerruti, M.; Chadwick, P.M.; Chaves, R.C.G.; Cheesebrough, A.; Colafrancesco, S.; Cologna, G.; Conrad, J.; Couturier, C.; Dalton, M.; Daniel, M.K.; Davids, I.D.; Degrange, B.; Deil, C.; deWilt, P.; Dickinson, H.J.; Djannati-Ataï, A.; Domainko, W.; Drury, L.O'C.; Dubus, G.; Dutson, K.; Dyks, J.; Dyrda, M.; Egberts, K.; Eger, P.; Espigat, P.; Fallon, L.; Farnier, C.; Fegan, S.; Feinstein, F.; Fernandes, M.V.; Fernandez, D.; Fiasson, A.; Fontaine, G.; Förster, A.; Füßling, M.; Gajdus, M.; Gallant, Y.A.; Garrigoux, T.; Gast, H.; Giebels, B.; Glicenstein, J.F.; Glück, B.; Göring, D.; Grondin, M.-H.; Häffner, S.; Hague, J.D.; Hahn, J.; Hampf, D.; Harris, J.; Heinz, S.; Heinzelmann, G.; Henr...
Authors
F. Acero
F. Aharonian
A.G. Akhperjanian
G. Anton
S. Balenderan
A. Balzer
A. Barnacka
Y. Becherini
J. Becker Tjus
K. Bernlöhr
E. Birsin
J. Biteau
A. Bochow
C. Boisson
J. Bolmont
P. Bordas
J. Brucker
F. Brun
P. Brun
T. Bulik
S. Carrigan
S. Casanova
M. Cerruti
Professor Paula Chadwick p.m.chadwick@durham.ac.uk
Head Of Department
R.C.G. Chaves
A. Cheesebrough
S. Colafrancesco
G. Cologna
J. Conrad
C. Couturier
M. Dalton
M.K. Daniel
I.D. Davids
B. Degrange
C. Deil
P. deWilt
H.J. Dickinson
A. Djannati-Ataï
W. Domainko
L.O'C. Drury
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
D. Fernandez
A. Fiasson
G. Fontaine
A. Förster
M. Füßling
M. Gajdus
Y.A. Gallant
T. Garrigoux
H. Gast
B. Giebels
J.F. Glicenstein
B. Glück
D. Göring
M.-H. Grondin
S. Häffner
J.D. Hague
J. Hahn
D. Hampf
J. Harris
S. Heinz
G. Heinzelmann
G. Henri
G. Hermann
A. Hillert
J.A. Hinton
W. Hofmann
P. Hofverberg
M. Holler
D. Horns
A. Jacholkowska
C. Jahn
M. Jamrozy
I. Jung
M.A. Kastendieck
K. Katarzyński
U. Katz
S. Kaufmann
B. Khélifi
S. Klepser
D. Klochkov
W. Kluźniak
T. Kneiske
N. Komin
K. Kosack
R. Kossakowski
F. Krayzel
P.P. Krüger
H. Laffon
G. Lamanna
J. Lefaucheur
M. Lemoine-Goumard
J.-P. Lenain
D. Lennarz
T. Lohse
A. Lopatin
C.-C. Lu
V. Marandon
A. Marcowith
J. Masbou
G. Maurin
N. Maxted
M. Mayer
T.J.L. McComb
M.C. Medina
J. Méhault
U. Menzler
R. Moderski
M. Mohamed
E. Moulin
C.L. Naumann
M. Naumann-Godo
M. de Naurois
D. Nedbal
D. Nekrassov
N. Nguyen
J. Niemiec
Professor Sam Nolan s.j.nolan@durham.ac.uk
Director Of Dcad
S. Ohm
E. de Oña Wilhelmi
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R.D. Parsons
M. Paz Arribas
N.W. Pekeur
G. Pelletier
J. Perez
P.-O. Petrucci
B. Peyaud
S. Pita
G. Pühlhofer
M. Punch
A. Quirrenbach
M. Raue
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
J. Ripken
L. Rob
S. Rosier-Lees
G. Rowell
B. Rudak
C.B. Rulten
V. Sahakian
D.A. Sanchez
A. Santangelo
R. Schlickeiser
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
F. Sheidaei
J.L. Skilton
H. Sol
G. Spengler
Ł Stawarz
R. Steenkamp
C. Stegmann
F. Stinzing
K. Stycz
I. Sushch
A. Szostek
J.-P. Tavernet
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. van Eldik
G. Vasileiadis
C. Venter
A. Viana
P. Vincent
H.J. Völk
F. Volpe
S. Vorobiov
M. Vorster
S.J. Wagner
Professor Martin Ward martin.ward@durham.ac.uk
External Examiner (PGR)
R. White
A. Wierzcholska
D. Wouters
M. Zacharias
A. Zajczyk
A.A. Zdziarski
A. Zech
H.-S. Zechlin
Abstract
Gamma-ray line signatures can be expected in the very-high-energy (Eγ>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 γ-ray sources that in most cases produce continuous spectra that span over several orders of magnitude in energy. Using data collected with the H.E.S.S. γ-ray instrument, upper limits on linelike 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 γ-ray line emission, flux limits of (2×10−7–2×10−5) m−2 s−1 sr−1 and (1×10−8–2×10−6) 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 ⟨σv⟩χχ→γγ reach ∼10−27 cm3 s−1, based on the Einasto parametrization of the Galactic DM halo density profile.
Citation
Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A., Anton, G., Balenderan, S., …Zechlin, H. (2013). Search for Photon-Linelike Signatures from Dark Matter Annihilations with H.E.S.S. Physical Review Letters, 110(4), Article 041301. https://doi.org/10.1103/physrevlett.110.041301
Journal Article Type | Article |
---|---|
Publication Date | Jan 1, 2013 |
Deposit Date | Mar 25, 2013 |
Publicly Available Date | Jul 11, 2014 |
Journal | Physical Review Letters |
Print ISSN | 0031-9007 |
Electronic ISSN | 1079-7114 |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 110 |
Issue | 4 |
Article Number | 041301 |
DOI | https://doi.org/10.1103/physrevlett.110.041301 |
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Copyright Statement
Reprinted with permission from the American Physical Society: Phys. Rev. Lett. 110, 041301 © (2013) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.
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