Discovery of the two wings of the Kookaburra complex in VHE gamma -rays with H.E.S.S

F. Aharonian; A. G. Akhperjanian; A. R. Bazer-Bachi; M. Beilicke; W. Benbow; D. Berge; K. Bernlöhr; C. Boisson; O. Bolz; V. Borrel; I. Braun; F. Breitling; A. M. Brown; R. Bühler; I. Büsching; S. Carrigan; P. M. Chadwick; L.-M. Chounet; R. Cornils; L. Costamante; B. Degrange; H. J. Dickinson; A. Djannati-Ataï; L. O'C. Drury; G. Dubus; K. Egberts; D. Emmanoulopoulos; P. Espigat; F. Feinstein; E. Ferrero; G. Fontaine; S. Funk; Y.A. Gallant; B. Giebels; J. F. Glicenstein; P. Goret; C. Hadjichristidis; D. Hauser; M. Hauser; G. Heinzelmann; G. Henri; G. Hermann; J. A. Hinton; W. Hofmann; M. Holleran; D. Horns; A. Jacholkowska; O. C. de Jager; B. Khélifi; Nu. Komin; A. Konopelko; I. J. Latham; R. Le Gallou; A. Lemière; M. Lemoine-Goumard; T. Lohse; J. M. Martin; O. Martineau-Huynh; A. Marcowith; C. Masterson; T. J. L. Mccomb; M. de Naurois; D. Nedbal; S. J. Nolan; A. Noutsos; K. J. Orford; J. L. Osborne; M. Ouchrif; M. Panter; G. Pelletier; S. Pita; G. Pühlhofer; M. Punch; B. C. Raubenheimer; M. Raue; S. M. Rayner; A. Reimer; O. Reimer; J. Ripken; L. Rob; L. Rolland; G. Rowell; V. Sahakian; L. Saugé; S. Schlenker; R. Schlickeiser; U. Schwanke; H. Sol; D. Spangler; F. Spanier; R. Steenkamp; C. Stegmann; G. Superina; J.-P. Tavernet; R. Terrier; C.G. Théoret; M. Tluczykont; C. van Eldik; G. Vasileiadis; C. Venter; P. Vincent; H. J. Völk; S. J. Wagner; M. Ward

doi:10.1051/0004-6361:20065511

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Discovery of the two wings of the Kookaburra complex in VHE gamma -rays with H.E.S.S

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Discovery of the two wings of the Kookaburra complex in VHE gamma -rays with H.E.S.S

F. Aharonian, A. G. Akhperjanian, A. R. Bazer-Bachi, M. Beilicke, W. Benbow, D. Berge, K. Bernlöhr, C. Boisson, O. Bolz, V. Borrel, …

Astronomy & Astrophysics - A&A, Vol.456, pp.245-251

2006

DOI: https://doi.org/10.1051/0004-6361:20065511

Résumé

ISM: general

gamma rays: observations

radiation mechanisms: non-thermal

Aims. Search for Very High Energy gamma-ray emission in the Kookaburra complex through observations with the H.E.S.S. array. Methods. Stereoscopic imaging of Cherenkov light emission of the gamma-ray showers in the atmosphere is used for the reconstruction and selection of the events to search for gamma-ray signals. Their spectrum is derived by a forward-folding maximum likelihood fit. Results. Two extended gamma-ray sources with an angular (68%) radius of 3.3-3.4' are discovered at high (>13sigma) statistical significance: HESS J1420-607 and HESS J1418-609. They exhibit a flux above 1 TeV of (2.97+/-0.18stat +/-0.60sys)x10-12 and (2.17+/-0.17stat +/-0.43sys)x10-12 cm-2 s-1, respectively, and similar hard photon indices ~2.2. Multi-wavelength comparisons show spatial coincidence with the wings of the Kookaburra. Two pulsar wind nebulae candidates, K3/PSR J1420-6048 and the Rabbit, lie on the edge of the H.E.S.S. sources. Conclusions. The two new sources confirm the non-thermal nature of at least parts of the two radio wings which overlap with the gamma-ray emission and establish their connection with the two X-ray pulsar wind nebulae candidates. Given the large point spread function of EGRET, the unidentified source(s) 3EG J1420-6038/GeV J1417-6100 could possibly be related to either or both H.E.S.S. sources. The most likely explanation for the Very High Energy gamma-rays discovered by H.E.S.S. is inverse Compton emission of accelerated electrons on the Cosmic Microwave Background near the two candidate pulsar wind nebulae, K3/PSR J1420-6048 and the Rabbit. Two scenarios which could lead to the observed large (~10 pc) offset-nebula type morphologies are briefly discussed.

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Titre: Discovery of the two wings of the Kookaburra complex in VHE gamma -rays with H.E.S.S
Créateurs - sans rôle: F. Aharonian - Max Planck Institute for Nuclear Physics
A. G. Akhperjanian - A. Alikhanyan National Laboratory
A. R. Bazer-Bachi - Université Toulouse III - Paul Sabatier
M. Beilicke - Universität Hamburg
W. Benbow - Max Planck Institute for Nuclear Physics
D. Berge - Max Planck Institute for Nuclear Physics
K. Bernlöhr - Max Planck Institute for Nuclear Physics
C. Boisson - Centre National de la Recherche Scientifique
O. Bolz - Max Planck Institute for Nuclear Physics
V. Borrel - Université Toulouse III - Paul Sabatier
I. Braun - Max Planck Institute for Nuclear Physics
F. Breitling
A. M. Brown - Durham University
R. Bühler - Max Planck Institute for Nuclear Physics
I. Büsching - North-West University
S. Carrigan - Max Planck Institute for Nuclear Physics
P. M. Chadwick - Durham University
L.-M. Chounet - École Polytechnique
R. Cornils - Universität Hamburg
L. Costamante - Max Planck Institute for Nuclear Physics
B. Degrange - École Polytechnique
H. J. Dickinson - Durham University
A. Djannati-Ataï - AstroParticule et Cosmologie
L. O'C. Drury
G. Dubus - Centre National de la Recherche Scientifique
K. Egberts - Max Planck Institute for Nuclear Physics
D. Emmanoulopoulos - Heidelberg University
P. Espigat - Collège de France
F. Feinstein - Centre National de la Recherche Scientifique
E. Ferrero - Heidelberg University
G. Fontaine - Laboratoire Leprince-Ringuet
S. Funk - Max Planck Institute for Nuclear Physics
S. Funk - Max Planck Institute for Nuclear Physics
Y.A. Gallant - Laboratoire de Physique Théorique
B. Giebels - Laboratoire Leprince-Ringuet
J. F. Glicenstein - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
P. Goret - CEA Paris-Saclay
C. Hadjichristidis - Durham University
D. Hauser - Max Planck Institute for Nuclear Physics
M. Hauser - Heidelberg University
G. Heinzelmann - Universität Hamburg
G. Henri - Centre National de la Recherche Scientifique
G. Hermann - Max Planck Institute for Nuclear Physics
J. A. Hinton - Heidelberg University
W. Hofmann - Max Planck Institute for Nuclear Physics
M. Holleran - North-West University
D. Horns - University of Tübingen
A. Jacholkowska - Laboratoire de Physique Théorique
O. C. de Jager - North-West University
B. Khélifi - École Polytechnique
Nu. Komin - Laboratoire de Physique Théorique
A. Konopelko - Humboldt-Universität zu Berlin
I. J. Latham - Durham University
R. Le Gallou - Durham University
A. Lemière - Collège de France
M. Lemoine-Goumard - École Polytechnique
T. Lohse - Humboldt-Universität zu Berlin
J. M. Martin - Observatoire de Paris
O. Martineau-Huynh - Laboratoire de Physique Nucléaire et de Hautes Énergies
A. Marcowith - Centre National de la Recherche Scientifique
C. Masterson - Max Planck Institute for Nuclear Physics
T. J. L. Mccomb - Durham University
M. de Naurois - Centre National de la Recherche Scientifique
D. Nedbal - Charles University
S. J. Nolan - Durham University
A. Noutsos - Durham University
K. J. Orford - Durham University
J. L. Osborne - Durham University
M. Ouchrif - Laboratoire de Physique Nucléaire et de Hautes Énergies
M. Panter - Max Planck Institute for Nuclear Physics
G. Pelletier - Centre National de la Recherche Scientifique
S. Pita - Collège de France
G. Pühlhofer - Heidelberg University
M. Punch - Collège de France
B. C. Raubenheimer - North-West University
M. Raue - Universität Hamburg
S. M. Rayner - Durham University
A. Reimer - Ruhr University Bochum
O. Reimer - Ruhr University Bochum
J. Ripken - Universität Hamburg
L. Rob - Charles University
L. Rolland - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
G. Rowell - Max Planck Institute for Nuclear Physics
V. Sahakian - A. Alikhanyan National Laboratory
L. Saugé - Centre National de la Recherche Scientifique
S. Schlenker - Humboldt-Universität zu Berlin
R. Schlickeiser - Ruhr University Bochum
U. Schwanke - Humboldt-Universität zu Berlin
H. Sol - Observatoire de Paris
D. Spangler - Durham University
F. Spanier - Ruhr University Bochum
R. Steenkamp
C. Stegmann
G. Superina - Laboratoire Leprince-Ringuet
J.-P. Tavernet
R. Terrier - APC - Astrophysique des Hautes Energies
C.G. Théoret - AstroParticule et Cosmologie
M. Tluczykont - Laboratoire Leprince-Ringuet
C. van Eldik
G. Vasileiadis - Laboratoire de Physique Théorique
C. Venter
P. Vincent
H. J. Völk
S. J. Wagner
M. Ward
Détails de publication: Astronomy & Astrophysics - A&A, Vol.456, pp.245-251
Identifiants: 99151255809311
Unité académique: Université de Montpellier
Langue: English
Type de ressource: Journal article
Champs locaux: in2p3-00124916