Discovery of VHE emission towards the Carina arm region with the H.E.S.S. telescope array: HESS J1018-589 - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Astronomy and Astrophysics - A&A Year : 2012

Discovery of VHE emission towards the Carina arm region with the H.E.S.S. telescope array: HESS J1018-589

A. Abramowski , Fabio Acero (1) , F. Aharonian , A. G. Akhperjanian , G. Anton , Agnès Balzer , A. Barnacka , U. Barres de Almeida , Y. Becherini (2, 3) , J. Becker , B. Behera , K. Bernlöhr , E. Birsin , J. Biteau (2) , A. Bochow , C. Boisson , J. Bolmont , P. Bordas , J. Brucker , F. Brun (2) , P. Brun , T. Bulik , I. Büsching , S. Carrigan , S. Casanova , M. Cerruti , P. M. Chadwick , A. Charbonnier , R. C. G. Chaves , A. Cheesebrough , A. C. Clapson , G. Cologna , J. Conrad , M. Dalton , M. K. Daniel , I. D. Davids , B. Degrange (2) , C. Deil , H. J. Dickinson , A. Djannati-Ataï (4) , W. Domainko , L. O'C. Drury , G. Dubus , K. Dutson , J. Dyks , M. Dyrda , K. Egberts , P. Eger , P. Espigat (3) , L. Fallon , C. Farnier (1) , S. Fegan , F. Feinstein (1) , M. V. Fernandes , A. Fiasson (5) , F. Krayzel (5) , G. Fontaine (2) , A. Förster , M. Füssling , Y. A. Gallant (1) , H. Gast , L. Gérard (3) , D. Gerbig , B. Giebels (2) , J. F. Glicenstein , B. Glück , P. Goret , D. Göring , S. Häffner , 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. Katarzyński , U. Katz , S. Kaufmann , D. Keogh , D. Khangulyan , B. Khélifi (2) , D. Klochkov , W. Kluźniak , T. Kneiske , Nu. Komin (5) , K. Kosack , R. Kossakowski (5) , H. Laffon (2) , G. Lamanna (5) , D. Lennarz , T. Lohse , A. Lopatin , C. -C. Lu , V. Marandon , Alexandre Marcowith (1) , Julien Masbou (5) , D. Maurin , N. Maxted , M. Mayer , T. J. L. Mccomb , M. C. Medina , J. Méhault (6) , R. Moderski , Emmanuel Moulin , C. L. Naumann , M. Naumann-Godo , M. de Naurois (2) , D. Nedbal , D. Nekrassov , N. Nguyen , B. Nicholas , J. Niemiec , S. J. Nolan , S. Ohm , E. de Oña Wilhelmi , B. Opitz , M. Ostrowski , I. Oya , M. Panter , M. Paz Arribas , G. Pedaletti , G. Pelletier , P. -O. Petrucci , S. Pita (3) , G. Pühlhofer , M. Punch (3) , A. Quirrenbach , M. Raue , S. M. Rayner , A. Reimer , O. Reimer , Matthieu Renaud (1) , R. de Los Reyes , F. Rieger , J. Ripken , L. Rob , S. Rosier-Lees (5) , G. Rowell , B. Rudak , C. B. Rulten , J. Ruppel , V. Sahakian , D. A. Sanchez , A. Santangelo , R. Schlickeiser , F. M. Schöck , A. Schulz , U. Schwanke , S. Schwarzburg , S. Schwemmer , F. Sheidaei (3) , 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 (3) , M. Tluczykont , K. Valerius , C. van Eldik , George Vasileiadis (1) , C. Venter , A. Viana , P. Vincent , H. J. Völk , F. Volpe , S. Vorobiov (1) , M. Vorster , S. J. Wagner , M. Ward , R. White , A. Wierzcholska , M. Zacharias , A. Zajczyk , A. A. Zdziarski , A. Zech , H. -S. Zechlin
A. Abramowski
  • Function : Author
Fabio Acero
F. Aharonian
A. G. Akhperjanian
  • Function : Author
G. Anton
  • Function : Author
Agnès Balzer
  • Function : Author
A. Barnacka
  • Function : Author
U. Barres de Almeida
  • Function : Author
J. Becker
  • Function : Author
B. Behera
  • Function : Author
K. Bernlöhr
E. Birsin
  • Function : Author
A. Bochow
  • Function : Author
C. Boisson
J. Bolmont
  • Function : Author
P. Bordas
  • Function : Author
J. Brucker
  • Function : Author
F. Brun
P. Brun
T. Bulik
  • Function : Author
I. Büsching
  • Function : Author
S. Carrigan
  • Function : Author
S. Casanova
M. Cerruti
P. M. Chadwick
  • Function : Author
A. Charbonnier
  • Function : Author
R. C. G. Chaves
  • Function : Author
A. Cheesebrough
  • Function : Author
A. C. Clapson
  • Function : Author
G. Cologna
  • Function : Author
J. Conrad
  • Function : Author
M. Dalton
  • Function : Author
M. K. Daniel
  • Function : Author
I. D. Davids
  • Function : Author
C. Deil
  • Function : Author
H. J. Dickinson
  • Function : Author
W. Domainko
  • Function : Author
L. O'C. Drury
  • Function : Author
G. Dubus
K. Dutson
  • Function : Author
J. Dyks
  • Function : Author
M. Dyrda
  • Function : Author
K. Egberts
  • Function : Author
P. Eger
  • Function : Author
L. Fallon
  • Function : Author
S. Fegan
M. V. Fernandes
  • Function : Author
A. Fiasson
A. Förster
  • Function : Author
M. Füssling
  • Function : Author
H. Gast
  • Function : Author
D. Gerbig
  • Function : Author
J. F. Glicenstein
  • Function : Author
B. Glück
  • Function : Author
P. Goret
  • Function : Author
D. Göring
  • Function : Author
S. Häffner
  • Function : Author
J. D. Hague
  • Function : Author
D. Hampf
  • Function : Author
M. Hauser
  • Function : Author
S. Heinz
  • Function : Author
G. Heinzelmann
  • Function : Author
G. Henri
  • Function : Author
G. Hermann
  • Function : Author
J. A. Hinton
  • Function : Author
A. Hoffmann
  • Function : Author
W. Hofmann
  • Function : Author
P. Hofverberg
  • Function : Author
M. Holler
  • Function : Author
D. Horns
A. Jacholkowska
  • Function : Author
O. C. de Jager
  • Function : Author
C. Jahn
  • Function : Author
M. Jamrozy
I. Jung
M. A. Kastendieck
  • Function : Author
K. Katarzyński
  • Function : Author
U. Katz
S. Kaufmann
  • Function : Author
D. Keogh
  • Function : Author
D. Khangulyan
B. Khélifi
D. Klochkov
  • Function : Author
W. Kluźniak
  • Function : Author
T. Kneiske
  • Function : Author
K. Kosack
D. Lennarz
  • Function : Author
T. Lohse
A. Lopatin
  • Function : Author
C. -C. Lu
  • Function : Author
V. Marandon
Julien Masbou
D. Maurin
N. Maxted
  • Function : Author
M. Mayer
  • Function : Author
T. J. L. Mccomb
  • Function : Author
M. C. Medina
  • Function : Author
J. Méhault
  • Function : Author
R. Moderski
  • Function : Author
Emmanuel Moulin
C. L. Naumann
  • Function : Author
M. Naumann-Godo
  • Function : Author
M. de Naurois
D. Nedbal
  • Function : Author
D. Nekrassov
  • Function : Author
N. Nguyen
  • Function : Author
B. Nicholas
  • Function : Author
J. Niemiec
S. J. Nolan
  • Function : Author
S. Ohm
E. de Oña Wilhelmi
  • Function : Author
B. Opitz
  • Function : Author
M. Ostrowski
I. Oya
  • Function : Author
M. Panter
  • Function : Author
M. Paz Arribas
  • Function : Author
G. Pedaletti
  • Function : Author
G. Pelletier
  • Function : Author
P. -O. Petrucci
  • Function : Author
G. Pühlhofer
  • Function : Author
M. Punch
A. Quirrenbach
  • Function : Author
M. Raue
  • Function : Author
S. M. Rayner
  • Function : Author
A. Reimer
O. Reimer
  • Function : Author
R. de Los Reyes
  • Function : Author
F. Rieger
J. Ripken
  • Function : Author
L. Rob
  • Function : Author
G. Rowell
B. Rudak
C. B. Rulten
  • Function : Author
J. Ruppel
  • Function : Author
V. Sahakian
  • Function : Author
D. A. Sanchez
  • Function : Author
A. Santangelo
R. Schlickeiser
  • Function : Author
F. M. Schöck
  • Function : Author
A. Schulz
  • Function : Author
U. Schwanke
S. Schwarzburg
  • Function : Author
S. Schwemmer
  • Function : Author
J. L. Skilton
  • Function : Author
H. Sol
  • Function : Author
G. Spengler
  • Function : Author
Ł. Stawarz
  • Function : Author
R. Steenkamp
  • Function : Author
C. Stegmann
  • Function : Author
F. Stinzing
  • Function : Author
K. Stycz
  • Function : Author
I. Sushch
  • Function : Author
A. Szostek
  • Function : Author
J. -P. Tavernet
  • Function : Author
M. Tluczykont
  • Function : Author
K. Valerius
  • Function : Author
C. van Eldik
C. Venter
A. Viana
  • Function : Author
P. Vincent
  • Function : Author
H. J. Völk
  • Function : Author
F. Volpe
  • Function : Author
M. Vorster
  • Function : Author
S. J. Wagner
  • Function : Author
M. Ward
  • Function : Author
R. White
  • Function : Author
A. Wierzcholska
M. Zacharias
A. Zajczyk
  • Function : Author
A. A. Zdziarski
  • Function : Author
A. Zech
H. -S. Zechlin
  • Function : Author

Abstract

The observational coverage with HESS of the Carina region in VHE gamma-rays benefits from deep exposure (40 h) of the neighboring open cluster Westerlund 2. The observations have revealed a new extended region of VHE gamma-ray emission. The new VHE source HESS J1018-589 shows a bright, point-like emission region positionally coincident with SNR G284.3-1.8 and 1FGL J1018.6 - 5856 and a diffuse extension towards the direction of PSR J1016-5857. A soft Gamma=2.7+-0.5 photon index, with a differential flux at 1TeV of N0=(4.2+-1.1)10^-13 TeV^-1 cm^-2 s^-1 is found for the point-like source, whereas the total emission region including the diffuse emission region is well fit by a power-law function with spectral index Gamma=2.9+-0.4 and differential flux at 1TeV of N0=(6.8+-1.6) 10^-13 TeV^-1 cm^-2 s^-1. This H.E.S.S. detection motivated follow-up X-ray observations with the XMM-Newton satellite to investigate the origin of the VHE emission. The analysis of the XMM-Newton data resulted in the discovery of a bright, non-thermal point-like source (XMMU J101855.4-58564) with a photon index of Gamma=1.65+-0.08 in the center of SNRG284.3-1.8, and a thermal, extended emission region coincident with its bright northern filament. The characteristics of this thermal emission are used to estimate the plasma density in the region as n~0.5 cm^-3(2.9kpc/d)^2. The position of XMMUJ101855.4-58564 is compatible with the position reported by the Fermi-LAT collaboration for the binary system 1FGL J1018.6-5856 and the variable Swift XRT source identified with it. The new X-ray data are used alongside archival multi-wavelength data to investigate the relationship between the VHE gamma-ray emission from HESSJ1018-589 and the various potential counterparts in the Carina arm region.

Dates and versions

in2p3-00684777 , version 1 (03-04-2012)

Identifiers

Cite

A. Abramowski, Fabio Acero, F. Aharonian, A. G. Akhperjanian, G. Anton, et al.. Discovery of VHE emission towards the Carina arm region with the H.E.S.S. telescope array: HESS J1018-589. Astronomy and Astrophysics - A&A, 2012, 541, pp.A5. ⟨10.1051/0004-6361/201218843⟩. ⟨in2p3-00684777⟩
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