Diffuse Galactic gamma-ray emission with H.E.S.S

A. Abramowski; F. Aharonian; F. Ait Benkhali; A. G. Akhperjanian; E. O. 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. M. Chadwick; N. Chakraborty; R. Chalme-Calvet; R. C. G. Chaves; M. Chrétien; S. Colafrancesco; G. Cologna; 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; P. Espigat; C. Farnier; S. Fegan; F. Feinstein; M. V. Fernandes; D. Fernandez; A. Fiasson; G. Fontaine; A. Förster; M. Füssling; S. Gabici; M. Gajdus; Y. A. Gallant; T. Garrigoux; G. Giavitto; B. Giebels; J. F. 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. A. 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. A. Kastendieck; K. Katarzyński; U. Katz; S. Kaufmann; B. Khélifi; Michel Kieffer; S. Klepser; D. Klochkov; W. Kluźniak; D. Kolitzus; Nu. Komin; K. Kosack; S. Krakau; F. Krayzel; P. P. Krüger; H. Laffon; G. Lamanna; J. Lefaucheur; V. Lefranc; 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; A. M. W. Mitchell; R. Moderski; M. Mohamed; K. Morå; Emmanuel Moulin; T. Murach; M. de Naurois; J. Niemiec; S. J. Nolan; L. Oakes; H. Odaka; S. Ohm; B. Opitz; M. Ostrowski; I. Oya; M. Panter; R. D. Parsons; M. Paz Arribas; N. W. 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. B. Rulten; V. Sahakian; D. Salek; D. A. Sanchez; A. Santangelo; R. Schlickeiser; F. Schüssler; 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. M. 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. 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; D. Zaborov; M. Zacharias; A. A. Zdziarski; A. Zech; H. -S. Zechlin; Y. Fukui

doi:10.1103/PhysRevD.90.122007

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Diffuse Galactic gamma-ray emission with H.E.S.S

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Diffuse Galactic gamma-ray emission with H.E.S.S

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

Physical Review D, Vol.90(12)

2014

DOI: https://doi.org/10.1103/PhysRevD.90.122007

Abstract

Diffuse $\gamma$-ray emission is the most prominent observable signature of celestial cosmic-ray interactions at high energies. While already being investigated at GeV energies over several decades, assessments of diffuse $\gamma$-ray emission at TeV energies remain sparse. After completion of the systematic survey of the inner Galaxy, the H.E.S.S. experiment is in a prime position to observe large-scale diffuse emission at TeV energies. Data of the H.E.S.S. Galactic Plane Survey are investigated in regions off known $\gamma$-ray sources. Corresponding $\gamma$-ray flux measurements were made over an extensive grid of celestial locations. Longitudinal and latitudinal profiles of the observed $\gamma$-ray fluxes show characteristic excess emission not attributable to known $\gamma$-ray sources. For the first time large-scale $\gamma$-ray emission along the Galactic Plane using imaging atmospheric Cherenkov telescopes has been observed. While the background subtraction technique limits the ability to recover modest variation on the scale of the H.E.S.S. field of view or larger, which is characteristic of the inverse Compton scatter-induced Galactic diffuse emission, contributions of neutral pion decay as well as emission from unresolved $\gamma$-ray sources can be recovered in the observed signal to a large fraction. Calculations show that the minimum $\gamma$-ray emission from $\pi^0$-decay represents a significant contribution to the total signal. This detection is interpreted as a mix of diffuse Galactic $\gamma$-ray emission and unresolved sources.

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Title: Diffuse Galactic gamma-ray emission with H.E.S.S
Creators - without role: A. Abramowski - Universität Hamburg
F. Aharonian - Max Planck Institute for Nuclear Physics
F. Ait Benkhali - Max Planck Institute for Nuclear Physics
A. G. Akhperjanian - National Academy of Sciences of Armenia
E. O. Angüner - Humboldt-Universität zu Berlin
M. Backes - University of Namibia
S. Balenderan - Durham University
Agnès Balzer - University of Amsterdam
A. Barnacka - Jagiellonian University
Y. Becherini - Linnaeus University
J. Becker Tjus - Ruhr University Bochum
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 - 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. Bregeon - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
F. Brun - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
P. Brun - Institut de Recherche sur les Lois Fondamentales de l'Univers
M. Bryan - University of Amsterdam
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
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
M. Chrétien - Sorbonne Université
S. Colafrancesco - University of the Witwatersrand
G. Cologna - Heidelberg University
J. Conrad - Stockholm University
C. Couturier - Sorbonne Université
Y. Cui - University of Tübingen
I. D. Davids - North-West University
B. Degrange - École Polytechnique
C. Deil - Max Planck Institute for Nuclear Physics
P. Dewilt - University of Adelaide
A. Djannati-Ataï - Délégation Paris 7
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
P. Espigat - Université Paris Cité
C. Farnier - Stockholm University
S. Fegan - Laboratoire Leprince-Ringuet
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
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 - Sorbonne Université
G. Giavitto
B. Giebels - Laboratoire Leprince-Ringuet
J. F. Glicenstein - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
D. Gottschall - University of Tübingen
M. -H. Grondin - Laboratoire de Physique des deux infinis Bordeaux
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 - 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. Ivascenko - North-West University
A. Jacholkowska - Sorbonne Université
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. 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
D. Kolitzus - Universität Innsbruck
Nu. Komin - University of the Witwatersrand
K. Kosack - CEA Paris-Saclay
S. Krakau - Ruhr University Bochum
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 - Laboratoire d’Annecy de Physique des Particules
J. Lefaucheur - Délégation Paris 7
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 Université
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 - Institut National de Physique Nucléaire et de Physique des Particules
N. Maxted - Université Grenoble Alpes
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
A. M. W. Mitchell - Max Planck Institute for Nuclear Physics
R. Moderski - Nicolaus Copernicus Astronomical Center
M. Mohamed - Heidelberg University
K. Morå - Stockholm University
Emmanuel Moulin - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
T. Murach - Humboldt-Universität zu Berlin
M. de Naurois - École Polytechnique
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
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 - Centre National de la Recherche Scientifique
P. -O. Petrucci - Université Grenoble Alpes
B. Peyaud - CEA Paris-Saclay
S. Pita - Sorbonne Paris Cité
H. Poon - Max Planck Institute for Nuclear Physics
G. Pühlhofer - University of Tübingen
M. Punch - Délégation Paris 7
A. Quirrenbach - Heidelberg University
S. Raab - Friedrich-Alexander-Universität Erlangen-Nürnberg
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
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 - Université Paris Cité
V. Sahakian - A. Alikhanyan National Laboratory
D. Salek - University of Amsterdam
D. A. Sanchez - Laboratoire d’Annecy de Physique des Particules
A. Santangelo - University of Tübingen
R. Schlickeiser
F. Schüssler
A. Schulz
U. Schwanke - Humboldt-Universität zu Berlin
S. Schwarzburg - University of Tübingen
S. Schwemmer - Heidelberg University
H. Sol - Université Paris Cité
F. Spanier - North-West University
G. Spengler - Stockholm University
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 - Humboldt-Universität zu Berlin
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 - Centre National de la Recherche Scientifique
M. Tluczykont - Universität Hamburg
C. Trichard - Laboratoire d’Annecy 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
J. Veh - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. Venter - North-West University
A. Viana - Max Planck Institute for Nuclear Physics
P. Vincent - Sorbonne Université
J. Vink - University of Amsterdam
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 Grenoble Alpes
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 - 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 - Max Planck Institute for Nuclear Physics
D. Zaborov - École Polytechnique
M. Zacharias - Heidelberg University
A. A. Zdziarski - Nicolaus Copernicus Astronomical Center
A. Zech - Université Paris Cité
H. -S. Zechlin - Universität Hamburg
Y. Fukui - Nagoya University
Publication Details: Physical Review D, Vol.90(12)
Identifiers: 9936777809311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: in2p3-01091552