Probing the extent of the non-thermal emission from the Vela X region at TeV energies with H.E.S.S

A. Abramowski; Fabio Acero; F. Aharonian; A. G. Akhperjanian; G. Anton; S. Balenderan; Agnès Balzer; A. Barnacka; Y. Becherini; J. Becker Tjus; K. Bernlöhr; E. Birsin; J. Biteau; A. Bochow; C. Boisson; J. Bolmont; P. Bordas; J. Brucker; F. Brun; P. Brun; T. Bulik; S. Carrigan; S. Casanova; M. Cerruti; P. M. Chadwick; A. Charbonnier; R. C. G. Chaves; A. Cheesebrough; G. Cologna; J. Conrad; C. Couturier; 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; F. Dubois; G. Dubus; K. Dutson; J. Dyks; M. Dyrda; K. Egberts; P. Eger; P. Espigat; L. Fallon; C. Farnier; S. Fegan; F. Feinstein; M. V. Fernandes; D. Fernandez; A. Fiasson; G. Fontaine; A. Förster; M. Füss Ling; M. Gajdus; Y. A. Gallant; T. Garrigoux; H. Gast; B. Giebels; J. F. Glicenstein; B. Glück; D. Göring; M. -H. Grondin; S. Häffner; J. D. Hague; J. Hahn; D. Hampf; J. Harris; S. Heinz; G. Heinzelmann; G. Henri; G. Hermann; A. Hillert; J. A. Hinton; W. Hofmann; P. Hofverberg; M. Holler; D. Horns; A. Jacholkowska; C. Jahn; M. Jamrozy; I. Jung; M. A. Kastendieck; K. Katarzyń Ski; U. Katz; S. Kaufmann; B. Khélifi; D. Klochkov; W. Kluź Niak; T. Kneiske; Nu. Komin; K. Kosack; R. Kossakowski; F. Krayzel; P. P. Krüger; H. Laffon; G. Lamanna; J. -P. Lenain; D. Lennarz; T. Lohse; A. Lopatin; C. -C. Lu; V. Marandon; Alexandre Marcowith; Julien Masbou; G. Maurin; N. Maxted; M. Mayer; T. J. L. Mccom; M. C. Medina; J. Méhault; U. Menzler; R. Moderski; M. Mohamed; Emmanuel Moulin; C. L. Naumann; M. Naumann-Godo; M. Denaurois; D. Nedbal; N. Nguyen; J. Niemiec; S. J. Nolan; S. Ohm; E. Deoñ Awilhelmi; B. Opitz; M. Ostrowski; I. Oya; M. Panter; D. Parsons; M. Pazarribas; N. W. Pekeur; G. Pelletier; J. Perez; P. -O. Petrucci; B. Peyaud; S. Pita; G. Pühlhofer; M. Punch; A. Quirrenbach; M. Raue; A. Reimer; O. Reimer; Matthieu Renaud; R. Delosreyes; F. Rieger; J. Ripken; L. Rob; S. Rosier-Lees; G. Rowell; B. Rudak; C. B. Rulten; V. Sahakian; D. A. Sanchez; A. Santangelo; R. Schlickeiser; A. Schulz; U. Schwanke; S. Schwarzburg; S. Schwemmer; F. Sheidaei; J. L. Skilton; H. Sol; G. Spengler; L. Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; A. Szostek; J. -P. Tavernet; R. Terrier; M. Tluczykont; C. Trichard; K. Valerius; C. Vaneldik; George Vasileiadis; C. Venter; A. Viana; P. Vincent; H. J. Völk; F. Volpe; S. Vorobiov; M. Vorster; S. J. Wagner; M. Ward; R. White; A. Wierzcholska; D. Wouters; M. Zacharias; A. Zajczyk; A. A. Zdziarski; A. Zech; H. -S. Zechlin

doi:10.1051/0004-6361/201219919

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Probing the extent of the non-thermal emission from the Vela X region at TeV energies with H.E.S.S

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Probing the extent of the non-thermal emission from the Vela X region at TeV energies with H.E.S.S

A. Abramowski, Fabio Acero, F. Aharonian, A. G. Akhperjanian, G. Anton, S. Balenderan, Agnès Balzer, A. Barnacka, Y. Becherini, J. Becker Tjus, …

Astronomy & Astrophysics - A&A, Vol.548

12/2012

DOI: https://doi.org/10.1051/0004-6361/201219919

Abstract

Vela X is a region of extended radio emission in the western part of the Vela constellation: one of the nearest pulsar wind nebulae (PWNe), and associated with the energetic Vela pulsar (PSR B0833-45). Extended very-high-energy (VHE) $\gamma$-ray emission (HESS $\mathrm{J0835\mhyphen 455}$) was discovered using the H.E.S.S. experiment in 2004. The VHE $\gamma$-ray emission was found to be coincident with a region of X-ray emission discovered with ${\it ROSAT}$ above 1.5 keV (the so-called \textit{Vela X cocoon}): a filamentary structure extending southwest from the pulsar to the centre of Vela X. A deeper observation of the entire Vela X nebula region, also including larger offsets from the cocoon, has been performed with H.E.S.S. This re-observation was carried out in order to probe the extent of the non-thermal emission from the Vela X region at TeV energies and to investigate its spectral properties. In order to increase the sensitivity to the faint $\gamma$-ray emission from the very extended Vela X region, a multivariate analysis method combining three complementary reconstruction techniques of Cherenkov-shower images is applied for the selection of $\gamma$-ray events. The analysis is performed with the On/Off background method, which estimates the background from separate observations pointing away from Vela X; towards regions free of $\gamma$-ray sources but with comparable observation conditions. The $\gamma$-ray surface brightness over the large Vela X region reveals that the detection of non-thermal VHE $\gamma$-ray emission from the PWN HESS $\mathrm{J0835\mhyphen 455}$ is statistically significant over a region of radius 1.2$^{\circ}$ around the position $\alpha$ = 08$^{\mathrm{h}}$ 35$^{\mathrm{m}}$ 00$^{\mathrm{s}}$, $\delta$ = -45$^{\circ}$ 36$^{\mathrm{\prime}}$ 00$^{\mathrm{\prime}\mathrm{\prime}}$ (J2000).

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Title: Probing the extent of the non-thermal emission from the Vela X region at TeV energies with H.E.S.S
Creators - without role: A. Abramowski - Universität Hamburg
Fabio Acero - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
F. Aharonian - Dublin Institute For Advanced Studies
A. G. Akhperjanian - National Academy of Sciences of Armenia
G. Anton - Friedrich-Alexander-Universität Erlangen-Nürnberg
S. Balenderan - Durham University
Agnès Balzer - Friedrich-Alexander-Universität Erlangen-Nürnberg
A. Barnacka - Nicolaus Copernicus Astronomical Center
Y. Becherini - Délégation Paris 7
J. Becker Tjus - Ruhr University Bochum
K. Bernlöhr - Max Planck Institute for Nuclear Physics
E. Birsin - Humboldt-Universität zu Berlin
J. Biteau - Laboratoire Leprince-Ringuet
A. Bochow - Max Planck Institute for Nuclear Physics
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 - École Polytechnique
P. Brun - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
T. Bulik - University of Warsaw
S. Carrigan - Max Planck Institute for Nuclear Physics
S. Casanova - Max Planck Institute for Nuclear Physics
M. Cerruti - Délégation Paris 7
P. M. Chadwick - Durham University
A. Charbonnier - Sorbonne Université
R. C. G. Chaves - Max Planck Institute for Nuclear Physics
A. Cheesebrough - Durham University
G. Cologna - Heidelberg University
J. Conrad - Stockholm University
C. Couturier - Université Paris Cité
M. Dalton - Institut National de Physique Nucléaire et de Physique des Particules
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 - AstroParticule et Cosmologie
W. Domainko - Max Planck Institute for Nuclear Physics
L. O'C. Drury
F. Dubois - Centre National de la Recherche Scientifique
G. Dubus - Université Joseph Fourier
K. Dutson - University of Leicester
J. Dyks - Nicolaus Copernicus Astronomical Center
M. Dyrda - Institute of Nuclear Physics, Polish Academy of Sciences
K. Egberts - Universität Innsbruck
P. Eger - Friedrich-Alexander-Universität Erlangen-Nürnberg
P. Espigat - Délégation Paris 7
L. Fallon - Dublin Institute For Advanced Studies
C. Farnier - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
S. Fegan - École Polytechnique
F. Feinstein - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. V. Fernandes - Universität Hamburg
D. Fernandez - Laboratoire Univers et Particules de Montpellier
A. Fiasson - Laboratoire d’Annecy de Physique des Particules
G. Fontaine - Laboratoire Leprince-Ringuet
A. Förster - Max Planck Institute for Nuclear Physics
M. Füss Ling
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
H. Gast - Max Planck Institute for Nuclear Physics
B. Giebels - Laboratoire Leprince-Ringuet
J. F. Glicenstein - CEA Paris-Saclay
B. Glück - Friedrich-Alexander-Universität Erlangen-Nürnberg
D. Göring - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. -H. Grondin - Max Planck Institute for Nuclear Physics
S. Häffner - Friedrich-Alexander-Universität Erlangen-Nürnberg
J. D. Hague - Max Planck Institute for Nuclear Physics
J. Hahn - Max Planck Institute for Nuclear Physics
D. Hampf - Universität Hamburg
J. Harris - Durham University
S. Heinz - Friedrich-Alexander-Universität Erlangen-Nürnberg
G. Heinzelmann - Universität Hamburg
G. Henri - Centre National de la Recherche Scientifique
G. Hermann - Max Planck Institute for Nuclear Physics
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 - Friedrich-Alexander-Universität Erlangen-Nürnberg
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
I. Jung - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. A. Kastendieck - Universität Hamburg
K. Katarzyń Ski
U. Katz - Friedrich-Alexander-Universität Erlangen-Nürnberg
S. Kaufmann - Heidelberg University
B. Khélifi - École Polytechnique
D. Klochkov - University of Tübingen
W. Kluź Niak
T. Kneiske - Universität Hamburg
Nu. Komin - Laboratoire d’Annecy de Physique des Particules
K. Kosack - CEA Paris-Saclay
R. Kossakowski - Institut National de Physique Nucléaire et de Physique des Particules
F. Krayzel - Laboratoire d’Annecy de Physique des Particules
P. P. Krüger - Max Planck Institute for Nuclear Physics
H. Laffon - École Polytechnique
G. Lamanna - Laboratoire d’Annecy de Physique des Particules
J. -P. Lenain - Heidelberg University
D. Lennarz - Max Planck Institute for Nuclear Physics
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
Julien Masbou - Centre National de la Recherche Scientifique
G. Maurin - Institut National de Physique Nucléaire et de Physique des Particules
N. Maxted - University of Adelaide
M. Mayer - Friedrich-Alexander-Universität Erlangen-Nürnberg
T. J. L. Mccom
M. C. Medina - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
J. Méhault - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
U. Menzler - Ruhr University Bochum
R. Moderski - Nicolaus Copernicus Astronomical Center
M. Mohamed - Heidelberg University
Emmanuel Moulin - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
C. L. Naumann - Sorbonne Université
M. Naumann-Godo - CEA Paris-Saclay
M. Denaurois - Laboratoire de Physique Nucléaire et de Hautes Énergies
D. Nedbal - Charles University
N. Nguyen - Universität Hamburg
J. Niemiec - Institute of Nuclear Physics, Polish Academy of Sciences
S. J. Nolan - Durham University
S. Ohm - University of Leeds
E. Deoñ Awilhelmi
B. Opitz - Universität Hamburg
M. Ostrowski - Jagiellonian University
I. Oya
M. Panter - Max Planck Institute for Nuclear Physics
D. Parsons - Max Planck Institute for Nuclear Physics
M. Pazarribas
N. W. Pekeur - North-West University
G. Pelletier - Centre National de la Recherche Scientifique
J. Perez - Universität Innsbruck
P. -O. Petrucci - Institut de Planétologie et d'Astrophysique de Grenoble
B. Peyaud - Institut de Recherche sur les Lois Fondamentales de l'Univers
S. Pita - Délégation Paris 7
G. Pühlhofer - University of Tübingen
M. Punch - Sorbonne Paris Cité
A. Quirrenbach - Heidelberg University
M. Raue - Universität Hamburg
A. Reimer - Universität Innsbruck
O. Reimer - Universität Innsbruck
Matthieu Renaud - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
R. Delosreyes
F. Rieger - Max Planck Institute for Nuclear Physics
J. Ripken - Stockholm University
L. Rob - Charles University
S. Rosier-Lees - Institut National de Physique Nucléaire et de Physique des Particules
G. Rowell - University of Adelaide
B. Rudak - Nicolaus Copernicus Astronomical Center
C. B. Rulten - Durham University
V. Sahakian - A. Alikhanyan National Laboratory
D. A. Sanchez - Max Planck Institute for Nuclear Physics
A. Santangelo - University of Tübingen
R. Schlickeiser - Ruhr University Bochum
A. Schulz - Friedrich-Alexander-Universität Erlangen-Nürnberg
U. Schwanke - Humboldt-Universität zu Berlin
S. Schwarzburg - University of Tübingen
S. Schwemmer - Heidelberg University
F. Sheidaei - North-West University
J. L. Skilton - Max Planck Institute for Nuclear Physics
H. Sol - Université Paris Cité
G. Spengler - Humboldt-Universität zu Berlin
L. Stawarz
R. Steenkamp - University of Namibia
C. Stegmann - Friedrich-Alexander-Universität Erlangen-Nürnberg
F. Stinzing - Friedrich-Alexander-Universität Erlangen-Nürnberg
K. Stycz - Friedrich-Alexander-Universität Erlangen-Nürnberg
I. Sushch - Humboldt-Universität zu Berlin
A. Szostek - Jagiellonian University
J. -P. Tavernet - Laboratoire de Physique Nucléaire et de Hautes Énergies
R. Terrier - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
M. Tluczykont - Universität Hamburg
C. Trichard - Institut National de Physique Nucléaire et de Physique des Particules
K. Valerius - Friedrich-Alexander-Universität Erlangen-Nürnberg
C. Vaneldik
George Vasileiadis - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
C. Venter - North-West University
A. Viana - Institut de Recherche sur les Lois Fondamentales de l'Univers
P. Vincent - Centre National de la Recherche Scientifique
H. J. Völk - Max Planck Institute for Nuclear Physics
F. Volpe - Max Planck Institute for Nuclear Physics
S. Vorobiov - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Vorster - North-West University
S. J. Wagner - Heidelberg University
M. Ward - Durham University
R. White - University of Leicester
A. Wierzcholska - Jagiellonian University
D. Wouters - Institut de Recherche sur les Lois Fondamentales de l'Univers
M. Zacharias - Ruhr University Bochum
A. Zajczyk - Université de Montpellier
A. A. Zdziarski - Nicolaus Copernicus Astronomical Center
A. Zech - Délégation Paris 7
H. -S. Zechlin - Universität Hamburg
Publication Details: Astronomy & Astrophysics - A&A, Vol.548
Identifiers: 9940609209311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: in2p3-00748534