Probing the gamma-ray emission from HESS J1834-087 using H.E.S.S. and Fermi LAT observations

A. Abramowski; F. Aharonian; F. Ait Benkhali; A. G. Akhperjanian; E. Angüner; G. Anton; M. Backes; S. Balenderan; Agnès Balzer; A. Barnacka; Y. Becherini; J. Becker Tjus; K. Bernlöhr; E. Birsin; E. Bissaldi; J. Biteau; M. Böttcher; C. Boisson; J. Bolmont; P. Bordas; J. Brucker; F. Brun; P. Brun; T. Bulik; S. Carrigan; S. Casanova; P. M. Chadwick; R. Chalme-Calvet; R. C. G. Chaves; A. Cheesebrough; M. Chrétien; S. Colafrancesco; G. Cologna; J. Conrad; C. Couturier; Y. Cui; M. Dalton; M. K. Daniel; I. D. Davids; B. Degrange; C. Deil; P. Dewilt; H. J. Dickinson; A. Djannati-Ataï; W. Domainko; 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. V. Fernandes; D. Fernandez; A. Fiasson; G. Fontaine; A. Förster; M. Füssling; M. Gajdus; Y. A. Gallant; T. Garrigoux; G. Giavitto; B. Giebels; J. F. Glicenstein; M. -H. Grondin; M. Grudzińska; S. Häffner; J. Hahn; J. Harris; G. Heinzelmann; G. Henri; G. Hermann; O. Hervet; A. Hillert; J. A. Hinton; W. Hofmann; P. Hofverberg; M. Holler; D. Horns; A. Jacholkowska; C. Jahn; M. Jamrozy; M. Janiak; F. Jankowsky; I. Jung; M. A. Kastendieck; K. Katarzyński; U. Katz; S. Kaufmann; B. Khélifi; Michel Kieffer; S. Klepser; D. Klochkov; W. Kluźniak; T. Kneiske; D. Kolitzus; Nu. Komin; K. Kosack; S. Krakau; F. Krayzel; P. P. Krüger; H. Laffon; G. Lamanna; J. Lefaucheur; A. Lemière; 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. J. L. Mccomb; J. Méhault; P. J. Meintjes; U. Menzler; M. Meyer; R. Moderski; M. Mohamed; Emmanuel Moulin; T. Murach; C. L. Naumann; M. de Naurois; J. Niemiec; S. J. Nolan; L. Oakes; H. Odaka; S. Ohm; E. de Oña Wilhelmi; B. Opitz; M. Ostrowski; I. Oya; M. Panter; R. D. Parsons; M. Paz Arribas; N. W. Pekeur; G. Pelletier; J. Perez; P. -O. Petrucci; B. Peyaud; S. Pita; H. Poon; G. Pühlhofer; M. Punch; A. Quirrenbach; S. Raab; M. Raue; I. Reichardt; A. Reimer; O. Reimer; Matthieu Renaud; R. de Los Reyes; F. Rieger; L. Rob; C. Romoli; S. Rosier-Lees; G. Rowell; B. Rudak; C. B. Rulten; V. Sahakian; D. A. Sanchez; A. Santangelo; R. Schlickeiser; F. Schüssler; A. Schulz; U. Schwanke; S. Schwarzburg; S. Schwemmer; H. Sol; G. Spengler; F. Spies; Ł. Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; J. -P. Tavernet; T. Tavernier; A. M. Taylor; R. Terrier; M. Tluczykont; C. Trichard; K. Valerius; C. van Eldik; B. van Soelen; George Vasileiadis; C. Venter; A. Viana; P. Vincent; H. J. Völk; F. Volpe; M. Vorster; T. Vuillaume; S. J. Wagner; P. Wagner; R. M. Wagner; M. Ward; M. Weidinger; Q. Weitzel; R. White; A. Wierzcholska; P. Willmann; A. Wörnlein; D. Wouters; R. Yang; V. Zabalza; M. Zacharias; A. A. Zdziarski; A. Zech; H. -S. Zechlin; Fermi-Lat Collaboration; Fabio Acero; J. M. Casandjian; J. Cohen-Tanugi; F. Giordano; Lucas Guillemot; J. Lande; H. Pletsch; Y. Uchiyama

doi:10.1051/0004-6361/201322694

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Probing the gamma-ray emission from HESS J1834-087 using H.E.S.S. and Fermi LAT observations

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Probing the gamma-ray emission from HESS J1834-087 using H.E.S.S. and Fermi LAT observations

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

Astronomy & Astrophysics - A&A, Vol.574

2015

DOI: https://doi.org/10.1051/0004-6361/201322694

Abstract

Previous observations with HESS have revealed the existence of an extended very-high-energy (VHE; E>100 GeV) gamma-ray source, HESS J1834-087, coincident with the SNR W41. The origin of the gamma-ray emission has been further investigated with HESS and the Fermi-LAT. The gamma-ray data provided by 61h (HESS) and 4 yrs (Fermi LAT) of observations cover over 5 decades in energy (1.8GeV - 30TeV). The morphology and spectrum of the TeV and GeV sources have been studied and multi-wavelength data have been used to investigate the origin of the observed emission. The TeV source can be modeled with a sum of two components: one point-like and one significantly extended (sig_TeV = 0.17{\deg}), both centered on SNR W41 and exhibiting spectra described by a power law of index 2.6. The GeV source detected with Fermi is extended (sig_GeV =0.15{\deg}) and morphologically matches the VHE emission. Its spectrum can be described by a power-law with index 2.15 and joins smoothly the one of the whole TeV source. A break appears in the spectra around 100 GeV. Two main scenarios are proposed to explain the emission: a pulsar wind nebula (PWN) or the interaction of SNR W41 with a molecular cloud. X-ray observations suggest the presence of a point-like source (pulsar candidate) near the center of the SNR and non-thermal X-ray diffuse emission which could arise from a potential PWN. The PWN scenario is supported by the match of of the TeV and GeV positions with the putative pulsar. However, the overall spectrum is reproduced by a 1-zone leptonic model only if an excess of low-energy electrons is injected by a high spin-down power pulsar. This low-energy component is not needed if the point-like TeV source is unrelated to the extended GeV and TeV sources. The interacting SNR scenario is supported by the spatial coincidence between the gamma-ray sources, the detection of OH maser lines and the hadronic modeling.

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Title: Probing the gamma-ray emission from HESS J1834-087 using H.E.S.S. and Fermi LAT observations
Creators - without role: A. Abramowski - Universität Hamburg
F. Aharonian - Dublin Institute For Advanced Studies
F. Ait Benkhali - Max Planck Institute for Nuclear Physics
A. G. Akhperjanian - National Academy of Sciences of Armenia
E. Angüner - Humboldt-Universität zu Berlin
G. Anton - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Backes - University of Namibia
S. Balenderan - Durham University
Agnès Balzer - University of Potsdam
A. Barnacka - Nicolaus Copernicus Astronomical Center
Y. Becherini - Linnaeus University
J. Becker Tjus - Ruhr University Bochum
K. Bernlöhr - Max Planck Institute for Nuclear Physics
E. Birsin - Humboldt-Universität zu Berlin
E. Bissaldi - Universität Innsbruck
J. Biteau - École Polytechnique
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. Brucker - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Brun - Max Planck Institute for Nuclear Physics
P. Brun - Institut de Recherche sur les Lois Fondamentales de l'Univers
T. Bulik - University of Warsaw
S. Carrigan - Max Planck Institute for Nuclear Physics
S. Casanova - Max Planck Institute for Nuclear Physics
P. M. Chadwick - Durham University
R. Chalme-Calvet - Sorbonne Université
R. C. G. Chaves - Institut de Recherche sur les Lois Fondamentales de l'Univers
A. Cheesebrough - Durham University
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
M. Dalton - Laboratoire de Physique des deux infinis Bordeaux
M. K. Daniel - Durham University
I. D. Davids - University of Namibia
B. Degrange - École Polytechnique
C. Deil - Max Planck Institute for Nuclear Physics
P. Dewilt - University of Adelaide
H. J. Dickinson - Stockholm University
A. Djannati-Ataï - APC - Astrophysique des Hautes Energies
W. Domainko - Max Planck Institute for Nuclear Physics
L. O'C. Drury
G. Dubus - Institut de Planétologie et d'Astrophysique de Grenoble
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 - Universität Innsbruck
P. Eger - Max Planck Institute for Nuclear Physics
P. Espigat - Université Paris Cité
C. Farnier - Stockholm University
S. Fegan - Centre National de la Recherche Scientifique
F. Feinstein - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. V. 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 - Laboratoire Leprince-Ringuet
A. Förster - Max Planck Institute for Nuclear Physics
M. Füssling
M. Gajdus - Humboldt-Universität zu Berlin
Y. A. Gallant - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
T. Garrigoux - Laboratoire de Physique Nucléaire et de Hautes Énergies
G. Giavitto
B. Giebels - École Polytechnique
J. F. Glicenstein - Institut de Recherche sur les Lois Fondamentales de l'Univers
M. -H. Grondin - Max Planck Institute for Nuclear Physics
M. Grudzińska - University of Warsaw
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 - Délégation Paris 7
A. Hillert - Max Planck Institute for Nuclear Physics
J. A. 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. 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 - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. A. Kastendieck - Universität Hamburg
K. Katarzyński - Nicolaus Copernicus University
U. Katz - Friedrich-Alexander-Universität Erlangen-Nürnberg
S. Kaufmann - Heidelberg University
B. Khélifi - Délégation Paris 7
Michel Kieffer - Sorbonne Université
S. Klepser
D. Klochkov - University of Tübingen
W. Kluźniak - Nicolaus Copernicus Astronomical Center
T. Kneiske - Universität Hamburg
D. Kolitzus - Universität Innsbruck
Nu. Komin - Laboratoire d’Annecy de Physique des Particules
K. Kosack - CEA Paris-Saclay
S. Krakau - Ruhr University Bochum
F. Krayzel - Laboratoire d’Annecy de Physique des Particules
P. P. Krüger - Max Planck Institute for Nuclear Physics
H. Laffon - Laboratoire de Physique des deux infinis Bordeaux
G. Lamanna - Centre National de la Recherche Scientifique
J. Lefaucheur - Délégation Paris 7
A. Lemière - Sorbonne Paris Cité
M. Lemoine-Goumard - Laboratoire de Physique des deux infinis Bordeaux
J. -P. Lenain - Laboratoire de Physique Nucléaire et de Hautes Énergies
T. Lohse - Humboldt-Universität zu Berlin
A. Lopatin - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. -C. Lu - Max Planck Institute for Nuclear Physics
V. Marandon - Max Planck Institute for Nuclear Physics
Alexandre Marcowith - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
R. Marx - Max Planck Institute for Nuclear Physics
G. Maurin - Laboratoire d’Annecy de Physique des Particules
N. Maxted - University of Adelaide
M. Mayer - University of Potsdam
T. J. L. Mccomb - Durham University
J. Méhault - Institut National de Physique Nucléaire et de Physique des Particules
P. J. Meintjes - University of the Free State
U. Menzler - Ruhr University Bochum
M. Meyer - Stockholm University
R. Moderski - Nicolaus Copernicus Astronomical Center
M. Mohamed - Heidelberg University
Emmanuel Moulin - Institut de Recherche sur les Lois Fondamentales de l'Univers
T. Murach - Humboldt-Universität zu Berlin
C. L. Naumann - Sorbonne Université
M. de Naurois - Laboratoire Leprince-Ringuet
J. Niemiec - Institute of Nuclear Physics, Polish Academy of Sciences
S. J. Nolan - Durham University
L. Oakes - Humboldt-Universität zu Berlin
H. Odaka - Max Planck Institute for Nuclear Physics
S. Ohm - University of Leicester
E. de Oña Wilhelmi
B. Opitz - Universität Hamburg
M. Ostrowski - Jagiellonian University
I. Oya
M. Panter - Max Planck Institute for Nuclear Physics
R. D. Parsons - Max Planck Institute for Nuclear Physics
M. Paz Arribas - Humboldt-Universität zu Berlin
N. W. Pekeur - North-West University
G. Pelletier - Institut de Planétologie et d'Astrophysique de Grenoble
J. Perez - Universität Innsbruck
P. -O. Petrucci - Centre National de la Recherche Scientifique
B. Peyaud - Institut de Recherche sur les Lois Fondamentales de l'Univers
S. Pita - Délégation Paris 7
H. Poon - Max Planck Institute for Nuclear Physics
G. Pühlhofer - University of Tübingen
M. Punch - Université Paris Cité
A. Quirrenbach - Heidelberg University
S. Raab - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Raue - Universität Hamburg
I. Reichardt - Délégation Paris 7
A. Reimer - Universität Innsbruck
O. Reimer - Universität Innsbruck
Matthieu Renaud - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
R. de Los Reyes
F. Rieger - Max Planck Institute for Nuclear Physics
L. Rob - Charles University
C. Romoli - Dublin Institute For Advanced Studies
S. Rosier-Lees - Laboratoire d’Annecy de Physique des Particules
G. Rowell - University of Adelaide
B. Rudak - Nicolaus Copernicus Astronomical Center
C. B. Rulten - Délégation Paris 7
V. Sahakian - A. Alikhanyan National Laboratory
D. A. Sanchez - Laboratoire d’Annecy de Physique des Particules
A. Santangelo - University of Tübingen
R. Schlickeiser - Ruhr University Bochum
F. Schüssler
A. Schulz
U. Schwanke - Humboldt-Universität zu Berlin
S. Schwarzburg - University of Tübingen
S. Schwemmer - Heidelberg University
H. Sol - Délégation Paris 7
G. Spengler - Humboldt-Universität zu Berlin
F. Spies - Universität Hamburg
Ł. Stawarz - Jagiellonian University
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 - Délégation Paris 7
A. M. Taylor - Dublin Institute For Advanced Studies
R. Terrier - Université Paris Cité
M. Tluczykont - Universität Hamburg
C. Trichard - Institut National de Physique Nucléaire et de Physique des Particules
K. Valerius - Friedrich-Alexander-Universität Erlangen-Nürnberg
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
C. Venter - North-West University
A. Viana - Max Planck Institute for Nuclear Physics
P. Vincent - Laboratoire de Physique Nucléaire et de Hautes Énergies
H. J. Völk - Max Planck Institute for Nuclear Physics
F. Volpe - Max Planck Institute for Nuclear Physics
M. Vorster - North-West University
T. Vuillaume - Université Joseph Fourier
S. J. Wagner - Heidelberg University
P. Wagner - Humboldt-Universität zu Berlin
R. M. Wagner - Stockholm University
M. Ward - Durham University
M. Weidinger - Ruhr University Bochum
Q. Weitzel - Max Planck Institute for Nuclear Physics
R. White - University of Leicester
A. Wierzcholska - Jagiellonian University
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 - Max Planck Institute for Nuclear Physics
M. Zacharias - Ruhr University Bochum
A. A. Zdziarski - Nicolaus Copernicus Astronomical Center
A. Zech - Universität Hamburg
H. -S. Zechlin - CEA Paris-Saclay
Fermi-Lat Collaboration
Fabio Acero - CEA Paris-Saclay
J. M. Casandjian - Université Paris Cité
J. Cohen-Tanugi - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
F. Giordano - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
Lucas Guillemot - Centre National de la Recherche Scientifique
J. Lande - Kavli Institute for Particle Astrophysics and Cosmology
H. Pletsch - Leibniz University Hannover
Y. Uchiyama - Rikkyo University
Publication Details: Astronomy & Astrophysics - A&A, Vol.574
Identifiers: 9933987009311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: in2p3-01025854