Discovery of extended VHE gamma-ray emission from the asymmetric pulsar wind nebula in MSH 15-52 with H.E.S.S - Archive ouverte HAL
Journal Articles Astronomy and Astrophysics - A&A Year : 2005

Discovery of extended VHE gamma-ray emission from the asymmetric pulsar wind nebula in MSH 15-52 with H.E.S.S

F. Aharonian , A. G. Akhperjanian , K.-M. Aye , A. R. Bazer-Bachi , M. Beilicke , W. Benbow , D. Berge , P. Berghaus (1) , K. Bernlöhr , C. Boisson , O. Bolz , C. Borgmeier , I. Braun , F. Breitling , A. M. Brown , J. Bussons Gordo (2) , P. M. Chadwick , L.-M. Chounet (3) , R. Cornils , L. Costamante , B. Degrange (3) , A. Djannati-Ataï (1) , L. O'C. Drury , G. Dubus (3) , T. Ergin , P. Espigat (1) , F. Feinstein (2) , P. Fleury (3) , G. Fontaine (3) , S. Funk , Y.A. Gallant (2) , B. Giebels (3) , S. Gillessen , P. Goret , C. Hadjichristidis , M. Hauser , G. Heinzelmann , G. Henri , G. Hermann , J. A. Hinton , W. Hofmann , M. Holleran , D. Horns , O. C. de Jager , I. Jung , B. Khélifi , Nu. Komin , A. Konopelko , I. J. Latham , R. Le Gallou , A. Lemière (1) , M. Lemoine (3) , N. Leroy (3) , T. Lohse , A. Marcowith , C. Masterson , T. J. L. Mccomb , M. de Naurois (4) , S. J. Nolan , A. Noutsos , K. J. Orford , J. L. Osborne , M. Ouchrif (4) , M. Panter , G. Pelletier , S. Pita (1) , G. Pühlhofer , M. Punch (1) , B. C. Raubenheimer , M. Raue , J. Raux (4) , S. M. Rayner , I. Redondo , A. Reimer , O. Reimer , J. Ripken , L. Rob , L. Rolland (4) , G. Rowell , V. Sahakian , L. Saugé , S. Schlenker , R. Schlickeiser , C. Schuster , U. Schwanke , M. Siewert , H. Sol , R. Steenkamp , C. Stegmann , J.-P. Tavernet (4) , R. Terrier (1) , C.G. Théoret (1) , M. Tluczykont (3) , D. J. van Der Walt , G. Vasileiadis (2) , C. Venter , P. Vincent (4) , B. Visser , H. J. Völk , S. J. Wagner , O. Martineau-Huynh (4)
F. Aharonian
A. G. Akhperjanian
  • Function : Author
K.-M. Aye
  • Function : Author
A. R. Bazer-Bachi
  • Function : Author
M. Beilicke
  • Function : Author
W. Benbow
  • Function : Author
D. Berge
K. Bernlöhr
C. Boisson
O. Bolz
  • Function : Author
C. Borgmeier
  • Function : Author
I. Braun
  • Function : Author
F. Breitling
  • Function : Author
A. M. Brown
  • Function : Author
P. M. Chadwick
  • Function : Author
R. Cornils
  • Function : Author
L. Costamante
  • Function : Author
L. O'C. Drury
  • Function : Author
G. Dubus
T. Ergin
  • Function : Author
S. Funk
  • Function : Author
S. Gillessen
P. Goret
  • Function : Author
C. Hadjichristidis
  • Function : Author
M. Hauser
  • Function : Author
G. Heinzelmann
  • Function : Author
G. Henri
  • Function : Author
G. Hermann
  • Function : Author
J. A. Hinton
  • Function : Author
W. Hofmann
  • Function : Author
M. Holleran
  • Function : Author
D. Horns
O. C. de Jager
  • Function : Author
I. Jung
B. Khélifi
Nu. Komin
A. Konopelko
  • Function : Author
I. J. Latham
  • Function : Author
R. Le Gallou
  • Function : Author
N. Leroy
T. Lohse
A. Marcowith
C. Masterson
  • Function : Author
T. J. L. Mccomb
  • Function : Author
S. J. Nolan
  • Function : Author
A. Noutsos
  • Function : Author
K. J. Orford
  • Function : Author
J. L. Osborne
  • Function : Author
M. Panter
  • Function : Author
G. Pelletier
  • Function : Author
G. Pühlhofer
  • Function : Author
M. Punch
B. C. Raubenheimer
  • Function : Author
M. Raue
  • Function : Author
S. M. Rayner
  • Function : Author
I. Redondo
  • Function : Author
A. Reimer
O. Reimer
  • Function : Author
J. Ripken
  • Function : Author
L. Rob
  • Function : Author
G. Rowell
V. Sahakian
  • Function : Author
L. Saugé
  • Function : Author
S. Schlenker
  • Function : Author
R. Schlickeiser
  • Function : Author
C. Schuster
  • Function : Author
U. Schwanke
M. Siewert
  • Function : Author
H. Sol
  • Function : Author
R. Steenkamp
  • Function : Author
C. Stegmann
  • Function : Author
D. J. van Der Walt
  • Function : Author
C. Venter
B. Visser
  • Function : Author
H. J. Völk
  • Function : Author
S. J. Wagner
  • Function : Author

Abstract

The Supernova Remnant MSH 15-52 has been observed in very high energy (VHE) gamma-rays using the H.E.S.S. 4-telescope array located in Namibia. A gamma-ray signal is detected at the 25 sigma level during an exposure of 22.1 hours live time. The image reveals an elliptically shaped emission region around the pulsar PSR B1509-58, with semi-major axis 6' in the NW-SE direction and semi-minor axis 2' approximately. This morphology coincides with the diffuse pulsar wind nebula as observed at X-ray energies by ROSAT. The overall energy spectrum from 280 GeV up to 40 TeV can be fitted by a power law with photon index Gamma = 2.27 +/- 0.03(stat.) +/- 0.20(syst.). The detected emission can be plausibly explained by inverse Compton scattering of accelerated relativistic electrons with soft photons.

Dates and versions

in2p3-00024066 , version 1 (09-11-2006)

Identifiers

Cite

F. Aharonian, A. G. Akhperjanian, K.-M. Aye, A. R. Bazer-Bachi, M. Beilicke, et al.. Discovery of extended VHE gamma-ray emission from the asymmetric pulsar wind nebula in MSH 15-52 with H.E.S.S. Astronomy and Astrophysics - A&A, 2005, 435, pp.L17-L20. ⟨10.1051/0004-6361:200500105⟩. ⟨in2p3-00024066⟩
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