Extended VHE $\gamma$-ray emission towards SGR1806−20, LBV 1806−20, and stellar cluster Cl* 1806−20

H. Abdalla; A. Abramowski; F. Aharonian; F. Ait Benkhali; A.G. Akhperjanian; E.O. Angüner; M. Arrieta; P. Aubert; M. Backes; A. Balzer; M. Barnard; Y. Becherini; J. Becker Tjus; D. Berge; S. Bernhard; K. Bernlöhr; E. Birsin; R. Blackwell; M. Böttcher; C. Boisson; J. Bolmont; P. Bordas; J. Bregeon; F. Brun; P. Brun; M. Bryan; T. Bulik; M. Capasso; J. Carr; S. Casanova; N. Chakraborty; R. Chalme-Calvet; R.C.G. Chaves; A. Chen; J. Chevalier; M. Chrétien; S. Colafrancesco; G. Cologna; B. Condon; J. Conrad; C. Couturier; Y. Cui; I.D. Davids; B. Degrange; C. Deil; P. Dewilt; A. Djannati-Ataï; W. Domainko; A. Donath; L.O'C. Drury; G. Dubus; K. Dutson; J. Dyks; M. Dyrda; T. Edwards; K. Egberts; P. Eger; J.-P. Ernenwein; S. Eschbach; C. Farnier; S. Fegan; M.V. Fernandes; A. Fiasson; G. Fontaine; A. Förster; S. Funk; M. Füssling; S. Gabici; M. Gajdus; Y.A. Gallant; T. Garrigoux; G. Giavitto; B. Giebels; J.F. Glicenstein; D. Gottschall; A. Goyal; M.-H. Grondin; M. Grudzińska; D. Hadasch; J. Hahn; J. Hawkes; G. Heinzelmann; G. Henri; G. Hermann; O. Hervet; A. Hillert; J.A. Hinton; W. Hofmann; C. Hoischen; M. Holler; D. Horns; A. Ivascenko; A. Jacholkowska; M. Jamrozy; M. Janiak; D. Jankowsky; F. Jankowsky; M. Jingo; T. Jogler; L . Jouvin; I. Jung-Richardt; M.A. Kastendieck; K. Katarzyński; U. Katz; D. Kerszberg; B. Khélifi; M. Kieffer; J. King; S. Klepser; D. Klochkov; W. Kluźniak; D. Kolitzus; Nu. Komin; K. Kosack; S. Krakau; M. Kraus; F. Krayzel; P.P. Krüger; H. Laffon; G. Lamanna; J. Lau; J.-P. Lees; J. Lefaucheur; V. Lefranc; A. Lemière; M. Lemoine-Goumard; J.-P. Lenain; E. Leser; T. Lohse; M. Lorentz; R. Liu; I. Lypova; V. Marandon; Alexandre Marcowith; C. Mariaud; R. Marx; G. Maurin; N. Maxted; M. Mayer; P.J. Meintjes; U. Menzler; M. Meyer; A.M.W. Mitchell; R. Moderski; M. Mohamed; K. Morå; E. Moulin; T. Murach; M. de Naurois; F. Niederwanger; J. Niemiec; L. Oakes; H. Odaka; S. Öttl; S. Ohm; M. Ostrowski; I. Oya; M. Padovani; M. Panter; R.D. Parsons; M. Paz Arribas; N.W. Pekeur; G. Pelletier; P.-O. Petrucci; B. Peyaud; S. Pita; H. Poon; D. Prokhorov; H. Prokoph; G. Pühlhofer; M. Punch; A. Quirrenbach; S. Raab; A. Reimer; O. Reimer; Matthieu Renaud; R. de Los Reyes; F. Rieger; C. Romoli; S. Rosier-Lees; G. Rowell$^⋆; B. Rudak; C.B. Rulten; V. Sahakian; D. Salek; D.A. Sanchez; A. Santangelo; M. Sasaki; R. Schlickeiser; F. Schüssler; A. Schulz; U. Schwanke; S. Schwemmer; A.S. Seyffert; N. Shafi; I. Shilon; R. Simoni; H. Sol; F. Spanier; G. Spengler; F. Spies; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; J.-P. Tavernet; T. Tavernier; A.M. Taylor; R. Terrier; M. Tluczykont; C. Trichard; R. Tuffs; J. van Der Walt; C. van Eldik; B. van Soelen; George Vasileiadis; J. Veh; C. Venter; A. Viana; P. Vincent; J. Vink; F. Voisin; H.J. Völk; T. Vuillaume; Z. Wadiasingh; S.J. Wagner; P. Wagner; R.M. Wagner; R. White; A. Wierzcholska; P. Willmann; A. Wörnlein; D. Wouters; R. Yang; V. Zabalza; D. Zaborov; M. Zacharias; A.A. Zdziarski; A. Zech; F. Zefi; A. Ziegler; N. Żywucka

doi:10.1051/0004-6361/201628695

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$Extended VHE $\gamma$-ray emission towards SGR1806−20, LBV 1806−20, and stellar cluster Cl* 1806−20$

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Extended VHE $\gamma$-ray emission towards SGR1806−20, LBV 1806−20, and stellar cluster Cl* 1806−20

H. Abdalla, A. Abramowski, F. Aharonian, F. Ait Benkhali, A.G. Akhperjanian, E.O. Angüner, M. Arrieta, P. Aubert, M. Backes, A. Balzer, …

Astron.Astrophys, Vol.612

2018

DOI: https://doi.org/10.1051/0004-6361/201628695

Abstract

gamma rays: general

stars: magnetars

stars: massive

star: massive

particle: acceleration

dissipation: magnetic

energy: high

photon: flux

VHE

magnetar

cluster

statistical

synchrotron

HESS

Using the High Energy Spectroscopic System (H.E.S.S.) telescopes we have discovered a steady and extended very high-energy (VHE) γ-ray source towards the luminous blue variable candidate LBV 1806−20, massive stellar cluster Cl* 1806−20, and magnetar SGR 1806−20. The new VHE source, HESS J1808−204, was detected at a statistical significance of >6σ (post-trial) with a photon flux normalisation (2.9 ± 0.4stat ± 0.5sys) × 10−13 ph cm−2 s−1 TeV−1 at 1 TeV and a power-law photon index of 2.3 ± 0.2stat ± 0.3sys. The luminosity of this source (0.2 to 10 TeV; scaled to distance d = 8.7 kpc) is LVHE ~ 1.6 × 1034(d/8.7 kpc)2 erg s−1. The VHE γ-ray emission is extended and is well fit by a single Gaussian with statistical standard deviation of 0.095° ± 0.015°. This extension is similar to that of the synchrotron radio nebula G10.0−0.3, which is thought to be powered by LBV 1806−20. The VHE γ-ray luminosity could be provided by the stellar wind luminosity of LBV 1806−20 by itself and/or the massive star members of Cl* 1806−20. Alternatively, magnetic dissipation (e.g. via reconnection) from SGR 1806−20 can potentially account for the VHE luminosity. The origin and hadronic and/or leptonic nature of the accelerated particles responsible for HESS J1808−204 is not yet clear. If associated with SGR 1806−20, the potentially young age of the magnetar (650 yr) can be used to infer the transport limits of these particles to match the VHE source size. This discovery provides new interest in the potential for high-energy particle acceleration from magnetars, massive stars, and/or stellar clusters.Key words: gamma rays: general / stars: magnetars / stars: massive★ Wallenberg Academy Fellow.† Deceased.

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Title: Extended VHE $\gamma$-ray emission towards SGR1806−20, LBV 1806−20, and stellar cluster Cl* 1806−20
Creators - without role: H. Abdalla - North-West University
A. Abramowski - Universität Hamburg
F. Aharonian - National Academy of Sciences of Armenia
F. Ait Benkhali
A.G. Akhperjanian - National Academy of Sciences of Armenia
E.O. Angüner - Humboldt-Universität zu Berlin
M. Arrieta - Délégation Paris 7
P. Aubert - Centre National de la Recherche Scientifique
M. Backes - University of Namibia
A. Balzer - University of Amsterdam
M. Barnard - North-West University
Y. Becherini - Linnaeus University
J. Becker Tjus
D. Berge - University of Amsterdam
S. Bernhard - Universität Innsbruck
K. Bernlöhr - Max Planck Institute for Nuclear Physics
E. Birsin - Humboldt-Universität zu Berlin
R. Blackwell - University of Adelaide
M. Böttcher - North-West University
C. Boisson - Université Paris Sciences et Lettres
J. Bolmont - Laboratoire de Physique Nucléaire et de Hautes Énergies
P. Bordas - Max Planck Institute for Nuclear Physics
J. Bregeon - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
F. Brun - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
P. Brun - CEA Paris-Saclay
M. Bryan - University of Amsterdam
T. Bulik - University of Warsaw
M. Capasso - Laboratoire Leprince-Ringuet
J. Carr - Aix-Marseille Université
S. Casanova - Institute of Nuclear Physics, Polish Academy of Sciences
N. Chakraborty - Max Planck Institute for Nuclear Physics
R. Chalme-Calvet - Sorbonne Université
R.C.G. Chaves - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
A. Chen - University of the Witwatersrand
J. Chevalier - Institut National de Physique Nucléaire et de Physique des Particules
M. Chrétien - Sorbonne Université
S. Colafrancesco - University of the Witwatersrand
G. Cologna - Heidelberg University
B. Condon - Institut National de Physique Nucléaire et de Physique des Particules
J. Conrad - Stockholm University
C. Couturier - Laboratoire de Physique Nucléaire et de Hautes Énergies
Y. Cui - University of Tübingen
I.D. Davids - University of Namibia
B. Degrange - École Polytechnique
C. Deil - Max Planck Institute for Nuclear Physics
P. Dewilt - University of Adelaide
A. Djannati-Ataï - AstroParticule et Cosmologie
W. Domainko - Max Planck Institute for Nuclear Physics
A. Donath - Max Planck Institute for Nuclear Physics
L.O'C. Drury
G. Dubus - Université Grenoble Alpes
K. Dutson - University of Leicester
J. Dyks - Nicolaus Copernicus Astronomical Center
M. Dyrda - Institute of Nuclear Physics, Polish Academy of Sciences
T. Edwards - Max Planck Institute for Nuclear Physics
K. Egberts - University of Potsdam
P. Eger - Max Planck Institute for Nuclear Physics
J.-P. Ernenwein - Centre National de la Recherche Scientifique
S. Eschbach - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. Farnier - Stockholm University
S. Fegan - Laboratoire Leprince-Ringuet
M.V. Fernandes - Universität Hamburg
A. Fiasson - Laboratoire d’Annecy de Physique des Particules
G. Fontaine - Laboratoire Leprince-Ringuet
A. Förster - Max Planck Institute for Nuclear Physics
S. Funk - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Füssling
S. Gabici - Université Paris Cité
M. Gajdus - Humboldt-Universität zu Berlin
Y.A. Gallant - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
T. Garrigoux - North-West University
G. Giavitto
B. Giebels - École Polytechnique
J.F. Glicenstein - Institut de Recherche sur les Lois Fondamentales de l'Univers
D. Gottschall - University of Tübingen
A. Goyal
M.-H. Grondin - Laboratoire de Physique des deux infinis Bordeaux
M. Grudzińska - University of Warsaw
D. Hadasch - Universität Innsbruck
J. Hahn - Max Planck Institute for Nuclear Physics
J. Hawkes - University of Adelaide
G. Heinzelmann - Universität Hamburg
G. Henri - Centre National de la Recherche Scientifique
G. Hermann - Max Planck Institute for Nuclear Physics
O. Hervet - Délégation Paris 7
A. Hillert - Max Planck Institute for Nuclear Physics
J.A. Hinton - Max Planck Institute for Nuclear Physics
W. Hofmann - Max Planck Institute for Nuclear Physics
C. Hoischen - University of Potsdam
M. Holler - Centre National de la Recherche Scientifique
D. Horns - Universität Hamburg
A. Ivascenko - North-West University
A. Jacholkowska - Laboratoire de Physique Nucléaire et de Hautes Énergies
M. Jamrozy
M. Janiak - Nicolaus Copernicus Astronomical Center
D. Jankowsky - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Jankowsky - Heidelberg University
M. Jingo - University of the Witwatersrand
T. Jogler - Friedrich-Alexander-Universität Erlangen-Nürnberg
L . Jouvin - Sorbonne Paris Cité
I. Jung-Richardt - Friedrich-Alexander-Universität Erlangen-Nürnberg
M.A. Kastendieck - Universität Hamburg
K. Katarzyński - Nicolaus Copernicus University
U. Katz - Friedrich-Alexander-Universität Erlangen-Nürnberg
D. Kerszberg - Laboratoire de Physique Nucléaire et de Hautes Énergies
B. Khélifi - Centre National de la Recherche Scientifique
M. Kieffer - Sorbonne Université
J. King - Max Planck Institute for Nuclear Physics
S. Klepser
D. Klochkov - University of Tübingen
W. Kluźniak - Nicolaus Copernicus Astronomical Center
D. Kolitzus - Universität Innsbruck
Nu. Komin - University of the Witwatersrand
K. Kosack - CEA Paris-Saclay
S. Krakau - Ruhr University Bochum
M. Kraus - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Krayzel - Laboratoire d’Annecy de Physique des Particules
P.P. Krüger - North-West University
H. Laffon - Laboratoire de Physique des deux infinis Bordeaux
G. Lamanna - Centre National de la Recherche Scientifique
J. Lau - University of Adelaide
J.-P. Lees - Laboratoire d’Annecy de Physique des Particules
J. Lefaucheur - Sorbonne Paris Cité
V. Lefranc - Institut de Recherche sur les Lois Fondamentales de l'Univers
A. Lemière - Sorbonne Paris Cité
M. Lemoine-Goumard - Laboratoire de Physique des deux infinis Bordeaux
J.-P. Lenain - Sorbonne Paris Cité
E. Leser - University of Potsdam
T. Lohse - Humboldt-Universität zu Berlin
M. Lorentz - CEA Paris-Saclay
R. Liu - Max Planck Institute for Nuclear Physics
I. Lypova
V. Marandon - Max Planck Institute for Nuclear Physics
Alexandre Marcowith - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
C. Mariaud - Laboratoire Leprince-Ringuet
R. Marx - Max Planck Institute for Nuclear Physics
G. Maurin - Laboratoire d’Annecy de Physique des Particules
N. Maxted - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Mayer
P.J. Meintjes - University of the Free State
U. Menzler - Ruhr University Bochum
M. Meyer - Stockholm University
A.M.W. Mitchell
R. Moderski - Nicolaus Copernicus Astronomical Center
M. Mohamed - Heidelberg University
K. Morå - Stockholm University
E. Moulin - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
T. Murach - Humboldt-Universität zu Berlin
M. de Naurois - Laboratoire Leprince-Ringuet
F. Niederwanger - Universität Innsbruck
J. Niemiec - Institute of Nuclear Physics, Polish Academy of Sciences
L. Oakes - Humboldt-Universität zu Berlin
H. Odaka - Max Planck Institute for Nuclear Physics
S. Öttl - Universität Innsbruck
S. Ohm
M. Ostrowski
I. Oya
M. Padovani - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Panter - Max Planck Institute for Nuclear Physics
R.D. Parsons - Max Planck Institute for Nuclear Physics
M. Paz Arribas
N.W. Pekeur - North-West University
G. Pelletier - Institut de Planétologie et d'Astrophysique de Grenoble
P.-O. Petrucci - Institut de Planétologie et d'Astrophysique de Grenoble
B. Peyaud - CEA Paris-Saclay
S. Pita - Université Paris Cité
H. Poon - Max Planck Institute for Nuclear Physics
D. Prokhorov
H. Prokoph - Linnaeus University
G. Pühlhofer - University of Tübingen
M. Punch - Centre National de la Recherche Scientifique
A. Quirrenbach - Heidelberg University
S. Raab - Friedrich-Alexander-Universität Erlangen-Nürnberg
A. Reimer - Universität Innsbruck
O. Reimer - Universität Innsbruck
Matthieu Renaud - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
R. de Los Reyes - Max Planck Institute for Nuclear Physics
F. Rieger - Max Planck Institute for Nuclear Physics
C. Romoli - Dublin Institute For Advanced Studies
S. Rosier-Lees - Laboratoire d’Annecy de Physique des Particules
G. Rowell$^⋆
B. Rudak - Nicolaus Copernicus Astronomical Center
C.B. Rulten - Université Paris Cité
V. Sahakian - A. Alikhanyan National Laboratory
D. Salek - University of Amsterdam
D.A. Sanchez - Centre National de la Recherche Scientifique
A. Santangelo - University of Tübingen
M. Sasaki - University of Tübingen
R. Schlickeiser - Ruhr University Bochum
F. Schüssler - Institut de Recherches sur les lois Fondamentales de l'Univers
A. Schulz
U. Schwanke - Humboldt-Universität zu Berlin
S. Schwemmer - Heidelberg University
A.S. Seyffert - North-West University
N. Shafi - University of the Witwatersrand
I. Shilon - Friedrich-Alexander-Universität Erlangen-Nürnberg
R. Simoni - University of Amsterdam
H. Sol - Université Paris Cité
F. Spanier - North-West University
G. Spengler - Stockholm University
F. Spies - Universität Hamburg
R. Steenkamp - University of Namibia
C. Stegmann - University of Potsdam
F. Stinzing - Friedrich-Alexander-Universität Erlangen-Nürnberg
K. Stycz
I. Sushch - North-West University
J.-P. Tavernet - Laboratoire de Physique Nucléaire et de Hautes Énergies
T. Tavernier - Université Paris Cité
A.M. Taylor - Dublin Institute For Advanced Studies
R. Terrier - Université Paris Cité
M. Tluczykont - Universität Hamburg
C. Trichard - Université Savoie Mont Blanc
R. Tuffs - Max Planck Institute for Nuclear Physics
J. van Der Walt - North-West University
C. van Eldik - Friedrich-Alexander-Universität Erlangen-Nürnberg
B. van Soelen - University of the Free State
George Vasileiadis - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
J. Veh - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. Venter - North-West University
A. Viana - Max Planck Institute for Nuclear Physics
P. Vincent - Laboratoire de Physique Nucléaire et de Hautes Énergies
J. Vink - University of Amsterdam
F. Voisin - University of Adelaide
H.J. Völk - Max Planck Institute for Nuclear Physics
T. Vuillaume - Laboratoire d’Annecy de Physique des Particules
Z. Wadiasingh - North-West University
S.J. Wagner - Heidelberg University
P. Wagner - Humboldt-Universität zu Berlin
R.M. Wagner - Stockholm University
R. White - Max Planck Institute for Nuclear Physics
A. Wierzcholska - Institute of Nuclear Physics, Polish Academy of Sciences
P. Willmann - Friedrich-Alexander-Universität Erlangen-Nürnberg
A. Wörnlein - Friedrich-Alexander-Universität Erlangen-Nürnberg
D. Wouters - Institut de Recherche sur les Lois Fondamentales de l'Univers
R. Yang - Max Planck Institute for Nuclear Physics
V. Zabalza - University of Leicester
D. Zaborov - Centre National de la Recherche Scientifique
M. Zacharias - Heidelberg University
A.A. Zdziarski - Nicolaus Copernicus Astronomical Center
A. Zech - Université Paris Sciences et Lettres
F. Zefi - École Polytechnique
A. Ziegler - Friedrich-Alexander-Universität Erlangen-Nürnberg
N. Żywucka
Publication Details: Astron.Astrophys, Vol.612
Identifiers: 9934205109311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: hal-01797874