H.E.S.S. detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud

A. Abramowski; F. Aharonian; F. Ait Benkhali; A. Akhperjanian; E. Angüner; M. Backes; S. Balenderan; Agnès Balzer; A. Barnacka; Y. Becherini; J. Becker Tjus; D. Berge; S. Bernhard; K. Bernlöhr; E. Birsin; J. Biteau; M. Böttcher; C. Boisson; J. Bolmont; P. Bordas; J. Bregeon; F. Brun; P. Brun; M. Bryan; T. Bulik; S. Carrigan; S. Casanova; P. Chadwick; N. Chakraborty; R. Chalme-Calvet; R. Chaves; M. Chrétien; S. Colafrancesco; G. Cologna; J. Conrad; C. Couturier; Y. Cui; I. 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; P. Espigat; C. Farnier; S. Fegan; F. Feinstein; M. Fernandes; D. Fernandez; A. Fiasson; G. Fontaine; A. Förster; M. Füssling; S. Gabici; M. Gajdus; Y. Gallant; T. Garrigoux; G. Giavitto; B. Giebels; J. Glicenstein; D. Gottschall; M.-H. Grondin; M. Grudzińska; D. Hadasch; S. Häffner; J. Hahn; J. Harris; G. Heinzelmann; G. Henri; G. Hermann; O. Hervet; A. Hillert; J. Hinton; W. Hofmann; P. Hofverberg; M. Holler; D. Horns; A. Ivascenko; A. Jacholkowska; C. Jahn; M. Jamrozy; M. Janiak; F. Jankowsky; I. Jung-Richardt; M. Kastendieck; K. Katarzyński; U. Katz; S. Kaufmann; B. Khelifi; Michel Kieffer; S. Klepser; D. Klochkov; W. Kluźniak; D. Kolitzus; Nu. Komin; K. Kosack; S. Krakau; F. Krayzel; P. Krüger; H. Laffon; G. Lamanna; J. Lefaucheur; V. Lefranc; A. Lemiere; M. Lemoine-Goumard; J.-P. Lenain; T. Lohse; A. Lopatin; C.-C. Lu; V. Marandon; Alexandre Marcowith; R. Marx; G. Maurin; N. Maxted; M. Mayer; T. Mccomb; J. Mehault; P. Meintjes; U. Menzler; M. Meyer; A. Mitchell; R. Moderski; M. Mohamed; K. Morå; Emmanuel Moulin; T. Murach; M. de Naurois; J. Niemiec; S. Nolan; L. Oakes; H. Odaka; S. Ohm; B. Opitz; M. Ostrowski; I. Oya; M. Panter; R. Parsons; M. Paz Arribas; N. Pekeur; G. Pelletier; P.-O. Petrucci; B. Peyaud; S. Pita; H. Poon; G. Pühlhofer; M. Punch; A. Quirrenbach; S. Raab; I. Reichardt; A. Reimer; O. Reimer; Matthieu Renaud; R. de Los Reyes; F. Rieger; C. Romoli; S. Rosier-Lees; G. Rowell; B. Rudak; C. Rulten; V. Sahakian; D. Salek; D. Sanchez; A. Santangelo; R. Schlickeiser; F. Schussler; A. Schulz; U. Schwanke; S. Schwarzburg; S. Schwemmer; H. Sol; F. Spanier; G. Spengler; F. Spies; Ł. Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; J.-P. Tavernet; T. Tavernier; A. Taylor; R. Terrier; M. Tluczykont; C. Trichard; K. Valerius; C. van Eldik; B. van Soelen; George Vasileiadis; J. Veh; C. Venter; A. Viana; P. Vincent; J. Vink; H. Völk; F. Volpe; M. Vorster; T. Vuillaume; S. Wagner; P. Wagner; R. Wagner; M. Ward; M. Weidinger; Q. Weitzel; R. White; A. Wierzcholska; P. Willmann; A. Wörnlein; D. Wouters; R. Yang; V. Zabalza; D. Zaborov; M. Zacharias; A. Zdziarski; A. Zech; H.-S. Zechlin

doi:10.1051/0004-6361/201425070

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H.E.S.S. detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud

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H.E.S.S. detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud

A. Abramowski, F. Aharonian, F. Ait Benkhali, A. Akhperjanian, E. Angüner, M. Backes, S. Balenderan, Agnès Balzer, A. Barnacka, Y. Becherini, …

Astronomy & Astrophysics - A&A, Vol.574

02/2015

DOI: https://doi.org/10.1051/0004-6361/201425070

Résumé

errata

addenda

ISM: clouds

gamma rays: general

ISM: supernova remnants

G349.7+0.2 is a young Galactic supernova remnant (SNR) located at the distance of 11.5 kpc and observed across the entire electromagnetic spectrum from radio to high energy (HE; 0.1 GeV GeV) gamma-rays. Radio and infrared observations indicate that the remnant is interacting with a molecular cloud. In this paper, the detection of very high energy (VHE, E> 100 GeV) gamma-ray emission coincident with this SNR with the High Energy Stereoscopic System (H.E.S.S.) is reported. This makes it one of the farthest Galactic SNR ever detected in this domain. An integral flux F(E> 400 GeV) = (6.5 +- 1.1_stat +- 1.3_syst) x 10^-13 phcm^-2s^-1 corresponding to ~0.7% of that of the Crab Nebula and to a luminosity of ~10^34 erg s^-1 above the same energy threshold, and a steep photon index Gamma_VHE = 2.8 +- 0.27_stat +- 0.20_syst are measured. The analysis of more than 5 yr of Fermi-LAT data towards this source shows a power-law like spectrum with a best-fit photon index Gamma_HE = 2.2 +- 0.04_stat^+0.13_-0.31_sys. The combined gamma-ray spectrum of G349.7+0.2 can be described by either a broken power-law (BPL) or a power-law with exponential (or sub-exponential) cutoff (PLC). In the former case, the photon break energy is found at E_br,gamma = 55^+70_-30 GeV, slightly higher than what is usually observed in the HE/VHE gamma-ray emitting middle-aged SNRs known to be interacting with molecular clouds. In the latter case, the exponential (respectively sub-exponential) cutoff energy is measured at E_cut,gamma = 1.4^+1.6_-0.55 (respectively 0.35^+0.75_-0.21) TeV. A pion-decay process resulting from the interaction of the accelerated protons and nuclei with the dense surrounding medium is clearly the preferred scenario to explain the gamma-ray emission. The BPL with a spectral steepening of 0.5-1 and the PLC provide equally good fits to the data. The product of the average gas density and the total energy content of accelerated protons and nuclei amounts to n_HW_p ~ 5 x 10^51 ergcm^-3. (EDP Sciences)

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Titre: H.E.S.S. detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud
Créateurs - sans rôle: A. Abramowski - Universität Hamburg
F. Aharonian - Max Planck Institute for Nuclear Physics
F. Ait Benkhali
A. Akhperjanian - A. Alikhanyan National Laboratory
E. Angüner - Humboldt-Universität zu Berlin
M. Backes - University of Namibia
S. Balenderan - Durham University
Agnès Balzer - University of Amsterdam
A. Barnacka - Center for Astrophysics Harvard & Smithsonian
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
J. Biteau - Centre National de la Recherche Scientifique
M. Böttcher - North-West University
C. Boisson - Délégation Paris 7
J. Bolmont - Laboratoire de Physique Nucléaire et de Hautes Énergies
P. Bordas - University of Tübingen
J. Bregeon - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
F. Brun - CEA Paris-Saclay
P. Brun - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
M. Bryan - University of Amsterdam
T. Bulik - University of Warsaw
S. Carrigan - Max Planck Institute for Nuclear Physics
S. Casanova - Université de Montpellier, Montpellier Recherche en Management - MRM
P. Chadwick - Durham University
N. Chakraborty - Max Planck Institute for Nuclear Physics
R. Chalme-Calvet - Sorbonne Université
R. Chaves - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Chrétien - Sorbonne Université
S. Colafrancesco - University of the Witwatersrand
G. Cologna - Heidelberg University
J. Conrad - Stockholm University
C. Couturier - Laboratoire de Physique Nucléaire et de Hautes Énergies
Y. Cui - University of Tübingen
I. Davids - North-West University
B. Degrange - École Polytechnique
C. Deil - Max Planck Institute for Nuclear Physics
P. Dewilt - The 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 - Dublin Institute For Advanced Studies
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
P. Espigat - Centre National de la Recherche Scientifique
C. Farnier - Stockholm University
S. Fegan - École Polytechnique
F. Feinstein - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Fernandes - Universität Hamburg
D. Fernandez - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
A. Fiasson - Laboratoire d’Annecy de Physique des Particules
G. Fontaine - École Polytechnique
A. Förster - Max Planck Institute for Nuclear Physics
M. Füssling
S. Gabici - Sorbonne Paris Cité
M. Gajdus - Humboldt-Universität zu Berlin
Y. Gallant - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
T. Garrigoux - Laboratoire de Physique Nucléaire et de Hautes Énergies
G. Giavitto - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
B. Giebels - Laboratoire Leprince-Ringuet
J. Glicenstein - Institut de Recherche sur les Lois Fondamentales de l'Univers
D. Gottschall - University of Tübingen
M.-H. Grondin - Centre National de la Recherche Scientifique
M. Grudzińska - University of Warsaw
D. Hadasch - Universität Innsbruck
S. Häffner - Friedrich-Alexander-Universität Erlangen-Nürnberg
J. Hahn - Max Planck Institute for Nuclear Physics
J. Harris - Durham University
G. Heinzelmann - Universität Hamburg
G. Henri - Centre National de la Recherche Scientifique
G. Hermann - Max Planck Institute for Nuclear Physics
O. Hervet - Université Paris Cité
A. Hillert - Max Planck Institute for Nuclear Physics
J. Hinton - University of Leicester
W. Hofmann - Max Planck Institute for Nuclear Physics
P. Hofverberg - Max Planck Institute for Nuclear Physics
M. Holler - University of Potsdam
D. Horns - Universität Hamburg
A. Ivascenko - North-West University
A. Jacholkowska - Laboratoire de Physique Nucléaire et de Hautes Énergies
C. Jahn - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Jamrozy - Jagiellonian University
M. Janiak - Nicolaus Copernicus Astronomical Center
F. Jankowsky - Heidelberg University
I. Jung-Richardt - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Kastendieck - Universität Hamburg
K. Katarzyński - Nicolaus Copernicus University
U. Katz - Friedrich-Alexander-Universität Erlangen-Nürnberg
S. Kaufmann - Heidelberg University
B. Khelifi - Centre National de la Recherche Scientifique
Michel Kieffer - Sorbonne Université
S. Klepser - Deutsches Elektronen-Synchrotron [Zeuthen]
D. Klochkov
W. Kluźniak
D. Kolitzus
Nu. Komin
K. Kosack - Institut de Recherches sur les lois Fondamentales de l'Univers
S. Krakau
F. Krayzel - Laboratoire d’Annecy de Physique des Particules
P. Krüger
H. Laffon - Laboratoire de Physique des deux infinis Bordeaux
G. Lamanna - Laboratoire d’Annecy de Physique des Particules
J. Lefaucheur - AstroParticule et Cosmologie
V. Lefranc - Département de Physique des Particules (ex SPP)
A. Lemiere - AstroParticule et Cosmologie
M. Lemoine-Goumard - Laboratoire de Physique des deux infinis Bordeaux
J.-P. Lenain - Laboratoire de Physique Nucléaire et de Hautes Énergies
T. Lohse
A. Lopatin
C.-C. Lu - Max
V. Marandon
Alexandre Marcowith - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
R. Marx
G. Maurin - Laboratoire d’Annecy de Physique des Particules
N. Maxted - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Mayer
T. Mccomb
J. Mehault - Laboratoire de Physique des deux infinis Bordeaux
P. Meintjes
U. Menzler
M. Meyer
A. Mitchell
R. Moderski
M. Mohamed
K. Morå
Emmanuel Moulin
T. Murach
M. de Naurois - Laboratoire Leprince-Ringuet
J. Niemiec
S. Nolan
L. Oakes
H. Odaka
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. Parsons
M. Paz Arribas
N. Pekeur
G. Pelletier
P.-O. Petrucci - Institut de Planétologie et d'Astrophysique de Grenoble
B. Peyaud - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée
S. Pita - AstroParticule et Cosmologie
H. Poon
G. Pühlhofer
M. Punch - AstroParticule et Cosmologie
A. Quirrenbach
S. Raab
I. Reichardt - AstroParticule et Cosmologie
A. Reimer
O. Reimer
Matthieu Renaud - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
R. de Los Reyes
F. Rieger - Institut de Recherches sur les lois Fondamentales de l'Univers
C. Romoli
S. Rosier-Lees - Laboratoire d’Annecy de Physique des Particules
G. Rowell - School of Chemistry and Physics
B. Rudak - Laboratoire Univers et Théories
C. Rulten - Laboratoire Univers et Théories
V. Sahakian
D. Salek
D. Sanchez - Laboratoire d’Annecy de Physique des Particules
A. Santangelo
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke - Institut für Physik
S. Schwarzburg
S. Schwemmer
H. Sol - Laboratoire Univers et Théories
F. Spanier
G. Spengler - University of Lisbon
F. Spies
Ł. Stawarz
R. Steenkamp
C. Stegmann - Laboratoire Univers et Théories
F. Stinzing
K. Stycz
I. Sushch - Centre for Space Research [Potchefstroom]
J.-P. Tavernet - Laboratoire de Physique Nucléaire et de Hautes Énergies
T. Tavernier - AstroParticule et Cosmologie
A. Taylor
R. Terrier - AstroParticule et Cosmologie
M. Tluczykont
C. Trichard - Laboratoire d’Annecy de Physique des Particules
K. Valerius - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. van Eldik
B. van Soelen
George Vasileiadis - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
J. Veh
C. Venter - Centre for Space Research [Potchefstroom]
A. Viana
P. Vincent - Laboratoire de Physique Nucléaire et de Hautes Énergies
J. Vink - Astronomical Institute of the Slovak Academy of Sciences
H. Völk
F. Volpe
M. Vorster
T. Vuillaume
S. Wagner
P. Wagner
R. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann - Centre National d'Études Spatiales
A. Wörnlein
D. Wouters - Institut de Recherches sur les lois Fondamentales de l'Univers
R. Yang
V. Zabalza
D. Zaborov - Laboratoire Leprince-Ringuet
M. Zacharias
A. Zdziarski
A. Zech - Laboratoire Univers et Théories
H.-S. Zechlin
Détails de publication: Astronomy & Astrophysics - A&A, Vol.574
Identifiants: 99161820109311
Unité académique: Laboratoire Univers et Particules de Montpellier - LUPM; Montpellier Recherche en Management - MRM
Langue: English
Type de ressource: Journal article
Champs locaux: hal-02478856