%0 Journal Article
%T Probing the extent of the non-thermal emission from the Vela X region at TeV energies with H.E.S.S
%+ Laboratoire Univers et Particules de Montpellier (LUPM)
%+ Laboratoire Leprince-Ringuet (LLR)
%+ AstroParticule et Cosmologie (APC (UMR_7164))
%+ Laboratoire Univers et Théories (LUTH (UMR_8102))
%+ Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE)
%+ Laboratoire d'Annecy de Physique des Particules (LAPP)
%A Abramowski, A.
%A Acero, Fabio
%A Aharonian, F.
%A Akhperjanian, A. G.
%A Anton, G.
%A Balenderan, S.
%A Balzer, Agnès
%A Barnacka, A.
%A Becherini, Y.
%A Tjus, J. Becker
%A Bernlöhr, K.
%A Birsin, E.
%A Biteau, J.
%A Bochow, A.
%A Boisson, C.
%A Bolmont, J.
%A Bordas, P.
%A Brucker, J.
%A Brun, F.
%A Brun, P.
%A Bulik, T.
%A Carrigan, S.
%A Casanova, S.
%A Cerruti, M.
%A Chadwick, P. M.
%A Charbonnier, A.
%A Chaves, R. C. G.
%A Cheesebrough, A.
%A Cologna, G.
%A Conrad, J.
%A Couturier, C.
%A Dalton, M.
%A Daniel, M. K.
%A Davids, I. D.
%A Degrange, B.
%A Deil, C.
%A Dewilt, P.
%A Dickinson, H. J.
%A Djannati-Ataï, A.
%A Domainko, W.
%A Drury, L. O'C.
%A Dubois, F.
%A Dubus, G.
%A Dutson, K.
%A Dyks, J.
%A Dyrda, M.
%A Egberts, K.
%A Eger, P.
%A Espigat, P.
%A Fallon, L.
%A Farnier, C.
%A Fegan, S.
%A Feinstein, F.
%A Fernandes, M. V.
%A Fernandez, D.
%A Fiasson, A.
%A Fontaine, G.
%A Förster, A.
%A Ling, M. Füss
%A Gajdus, M.
%A Gallant, Y. A.
%A Garrigoux, T.
%A Gast, H.
%A Giebels, B.
%A Glicenstein, J. F.
%A Glück, B.
%A Göring, D.
%A Grondin, M. -H.
%A Häffner, S.
%A Hague, J. D.
%A Hahn, J.
%A Hampf, D.
%A Harris, J.
%A Heinz, S.
%A Heinzelmann, G.
%A Henri, G.
%A Hermann, G.
%A Hillert, A.
%A Hinton, J. A.
%A Hofmann, W.
%A Hofverberg, P.
%A Holler, M.
%A Horns, D.
%A Jacholkowska, A.
%A Jahn, C.
%A Jamrozy, M.
%A Jung, I.
%A Kastendieck, M. A.
%A Ski, K. Katarzyń
%A Katz, U.
%A Kaufmann, S.
%A Khélifi, B.
%A Klochkov, D.
%A Niak, W. Kluź
%A Kneiske, T.
%A Komin, Nu.
%A Kosack, K.
%A Kossakowski, R.
%A Krayzel, F.
%A Krüger, P. P.
%A Laffon, H.
%A Lamanna, G.
%A Lenain, J. -P.
%A Lennarz, D.
%A Lohse, T.
%A Lopatin, A.
%A Lu, C. -C.
%A Marandon, V.
%A Marcowith, Alexandre
%A Masbou, Julien
%A Maurin, G.
%A Maxted, N.
%A Mayer, M.
%A Mccom, T. J. L.
%A Medina, M. C.
%A Méhault, J.
%A Menzler, U.
%A Moderski, R.
%A Mohamed, M.
%A Moulin, Emmanuel
%A Naumann, C. L.
%A Naumann-Godo, M.
%A Denaurois, M.
%A Nedbal, D.
%A Nguyen, N.
%A Niemiec, J.
%A Nolan, S. J.
%A Ohm, S.
%A Awilhelmi, E. Deoñ
%A Opitz, B.
%A Ostrowski, M.
%A Oya, I.
%A Panter, M.
%A Parsons, D.
%A Pazarribas, M.
%A Pekeur, N. W.
%A Pelletier, G.
%A Perez, J.
%A Petrucci, P. -O.
%A Peyaud, B.
%A Pita, S.
%A Pühlhofer, G.
%A Punch, M.
%A Quirrenbach, A.
%A Raue, M.
%A Reimer, A.
%A Reimer, O.
%A Renaud, Matthieu
%A Delosreyes, R.
%A Rieger, F.
%A Ripken, J.
%A Rob, L.
%A Rosier-Lees, S.
%A Rowell, G.
%A Rudak, B.
%A Rulten, C. B.
%A Sahakian, V.
%A Sanchez, D. A.
%A Santangelo, A.
%A Schlickeiser, R.
%A Schulz, A.
%A Schwanke, U.
%A Schwarzburg, S.
%A Schwemmer, S.
%A Sheidaei, F.
%A Skilton, J. L.
%A Sol, H.
%A Spengler, G.
%A Stawarz, L.
%A Steenkamp, R.
%A Stegmann, C.
%A Stinzing, F.
%A Stycz, K.
%A Sushch, I.
%A Szostek, A.
%A Tavernet, J. -P.
%A Terrier, R.
%A Tluczykont, M.
%A Trichard, C.
%A Valerius, K.
%A Vaneldik, C.
%A Vasileiadis, George
%A Venter, C.
%A Viana, A.
%A Vincent, P.
%A Völk, H. J.
%A Volpe, F.
%A Vorobiov, S.
%A Vorster, M.
%A Wagner, S. J.
%A Ward, M.
%A White, R.
%A Wierzcholska, A.
%A Wouters, D.
%A Zacharias, M.
%A Zajczyk, A.
%A Zdziarski, A. A.
%A Zech, A.
%A Zechlin, H. -S.
%< avec comité de lecture
%@ 0004-6361
%J Astronomy and Astrophysics - A&A
%I EDP Sciences
%V 548
%P A38
%8 2012-12
%D 2012
%Z 1210.1359
%Z 2012A&A...548A..38A
%R 10.1051/0004-6361/201219919
%Z Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]
%Z Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]
%Z Physics [physics]
%Z Physics [physics]/Astrophysics [astro-ph]Journal articles
%X 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).
%G English
%Z HESS
%L in2p3-00748534
%U https://hal.in2p3.fr/in2p3-00748534
%~ IN2P3
%~ OBSPM
%~ CEA
%~ INSU
%~ UNIV-PARIS7
%~ X
%~ UNIV-SAVOIE
%~ UPMC
%~ UGA
%~ LAPP
%~ LLR
%~ LPNHE
%~ APC
%~ CNRS
%~ UNIV-MONTP2
%~ LUTH
%~ X-LLR
%~ X-DEP
%~ X-DEP-PHYS
%~ LUPM
%~ DSM-IRFU
%~ IRFU-APC
%~ PSL
%~ UPMC_POLE_2
%~ MIPS
%~ UNIV-MONTPELLIER
%~ CEA-DRF
%~ SORBONNE-UNIVERSITE
%~ LUPM_EMA
%~ SU-SCIENCES
%~ UNIV-PARIS
%~ UP-SCIENCES
%~ OBSPM-PSL
%~ USMB-COMUE
%~ SU-TI
%~ ALLIANCE-SU
%~ UM1-UM2
%~ LPNHE-2