Revisiting the Westerlund 2 field with the HESS telescope array

Boloka/Manakin Repository

Show simple item record

dc.contributor.author Abramowski, A.
dc.contributor.author Acero, F.
dc.contributor.author Aharonian, F.
dc.contributor.author Anton, G.
dc.contributor.author Barnacka, A.
dc.contributor.author Becherini, Y.
dc.contributor.author Becker, J.
dc.contributor.author Behera, B.
dc.contributor.author Bernlöhr, K.
dc.contributor.author Bochow, A.
dc.contributor.author Boisson, C.
dc.contributor.author Bolmont, J.
dc.contributor.author Bordas, P.
dc.contributor.author Borrel, V.
dc.contributor.author Boutelier, T.
dc.contributor.author Brucker, J.
dc.contributor.author Brun, F.
dc.contributor.author Brun, P.
dc.contributor.author Bulik, T.
dc.contributor.author Casanova, S.
dc.contributor.author Cerruti, M.
dc.contributor.author Charbonnier, A.
dc.contributor.author Cheesebrough, A.
dc.contributor.author Coignet, G.
dc.contributor.author Conrad, J.
dc.contributor.author Dalton, M.
dc.contributor.author Davids, Isak Delberth
dc.contributor.author Dawson, J.
dc.contributor.author De, Jager Ocker Cornelis
dc.contributor.author De, Los Reyes
dc.contributor.author De, Naurois
dc.contributor.author De, Oña Wilhelmi
dc.contributor.author Degrange, B.
dc.contributor.author Deil, C.
dc.contributor.author Domainko, W.
dc.contributor.author Dubois, F.
dc.contributor.author Dubus, G.
dc.contributor.author Dyks, J.
dc.contributor.author Dyrda, M.
dc.contributor.author Egberts, K.
dc.contributor.author Eger, P.
dc.contributor.author Espigat, P.
dc.contributor.author Fallon, L.
dc.contributor.author Farnier, C.
dc.contributor.author Fegan, S.
dc.contributor.author Feinstein, F.
dc.contributor.author Fiasson, A.
dc.contributor.author Fontaine, G.
dc.contributor.author Förster, A.
dc.contributor.author Fukui, Y.
dc.contributor.author Furukawa, N.
dc.contributor.author Gabici, S.
dc.contributor.author Gallant, Y. A.
dc.contributor.author Gérard, L.
dc.contributor.author Gerbig, D.
dc.contributor.author Giebels, B.
dc.contributor.author Glicenstein, J. F.
dc.contributor.author Glück, B.
dc.contributor.author Goret, P.
dc.contributor.author Göring, D.
dc.contributor.author Hague, J. D.
dc.contributor.author Hampf, D.
dc.contributor.author Hauser, M.
dc.contributor.author Heinz, S.
dc.contributor.author Heinzelmann, G.
dc.contributor.author Henri, G.
dc.contributor.author Hermann, G.
dc.contributor.author Hinton, J. A.
dc.contributor.author Hoffmann, A.
dc.contributor.author Hofmann, W.
dc.contributor.author Hofverberg, P.
dc.contributor.author Holleran, Mathew
dc.contributor.author Hoppe, S.
dc.contributor.author Horns, D.
dc.contributor.author Jacholkowska, A.
dc.contributor.author Jahn, C.
dc.contributor.author Jung, I.
dc.contributor.author Katarzynski, K.
dc.contributor.author Katz, U.
dc.contributor.author Kaufmann, S.
dc.contributor.author Kawamura, A.
dc.contributor.author Keogh, D.
dc.contributor.author Kerschhaggl, M.
dc.contributor.author Khangulyan, D.
dc.contributor.author Khélifi, B.
dc.contributor.author Klochkov, D.
dc.contributor.author Kluzniak, W.
dc.contributor.author Kneiske, T.
dc.contributor.author Komin, N. U.
dc.contributor.author Kosack, K.
dc.contributor.author Kossakowski, R.
dc.contributor.author Lamanna, G.
dc.contributor.author Lenain, J. P.
dc.contributor.author Lennarz, D.
dc.contributor.author Lohse, T.
dc.contributor.author Lu, C. C.
dc.contributor.author Marandon, V.
dc.contributor.author Marcowith, A.
dc.contributor.author Masbou, J.
dc.contributor.author Maurin, D.
dc.contributor.author Mccomb, T. J. L.
dc.contributor.author Medina, M. C.
dc.contributor.author Méhault, J.
dc.contributor.author Moderski, R.
dc.contributor.author Moulin, E.
dc.contributor.author Naumann-godo, M.
dc.contributor.author Nedbal, D.
dc.contributor.author Nekrassov, D.
dc.contributor.author Nguyen, N.
dc.contributor.author Nicholas, B.
dc.contributor.author Niemiec, J.
dc.contributor.author Nolan, S. J.
dc.contributor.author Ohama, A.
dc.contributor.author Ohm, S.
dc.contributor.author Olive, J. F.
dc.contributor.author Opitz, B.
dc.contributor.author Orford, K. J.
dc.contributor.author Ostrowski, M.
dc.contributor.author Panter, M.
dc.contributor.author Paz, Arribas
dc.contributor.author Pedaletti, G.
dc.contributor.author Pelletier, G.
dc.contributor.author Petrucci, P. O.
dc.contributor.author Pita, S.
dc.contributor.author Pühlhofer, G.
dc.contributor.author Punch, M.
dc.contributor.author Quirrenbach, A.
dc.contributor.author Raue, M.
dc.contributor.author Rayner, S. M.
dc.contributor.author Reimer, A.
dc.contributor.author Reimer, O.
dc.contributor.author Renaud, M.
dc.contributor.author Rieger, F.
dc.contributor.author Ripken, J.
dc.contributor.author Rob, L.
dc.contributor.author Rosier-lees, S.
dc.contributor.author Rowell, G.
dc.contributor.author Rudak, B.
dc.contributor.author Rulten, C. B.
dc.contributor.author Ruppel, J.
dc.contributor.author Ryde, F.
dc.contributor.author Sahakian, V.
dc.contributor.author Sano, H.
dc.contributor.author Santangelo, A.
dc.contributor.author Schlickeiser, R.
dc.contributor.author Schöck, F. M.
dc.contributor.author Schönwald, A.
dc.contributor.author Schwanke, U.
dc.contributor.author Schwarzburg, S.
dc.contributor.author Schwemmer, S.
dc.contributor.author Shalchi, A.
dc.contributor.author Sikora, M.
dc.contributor.author Skilton, J. L.
dc.contributor.author Sol, H.
dc.contributor.author Spengler, G.
dc.contributor.author Stawarz, L.
dc.contributor.author Steenkamp, R.
dc.contributor.author Stegmann, C.
dc.contributor.author Stinzing, F.
dc.contributor.author Sushch, I.
dc.contributor.author Szostek, A.
dc.contributor.author Tam, P. H.
dc.contributor.author Tavernet, J. P.
dc.contributor.author Terrier, R.
dc.contributor.author Tibolla, O.
dc.contributor.author Tluczykont, M.
dc.contributor.author Valerius, K.
dc.contributor.author Van Eldik, C.
dc.contributor.author Vasileiadis, G.
dc.contributor.author Venter, Christo
dc.contributor.author Vialle, J. P.
dc.contributor.author Viana, A.
dc.contributor.author Vincent, P.
dc.contributor.author Vivier, M.
dc.contributor.author Völk, H. J.
dc.contributor.author Akhperjanian, A.G.
dc.contributor.author Barres de Almeida, U.
dc.contributor.author Bazer-Bachi, A.R.
dc.contributor.author Büsching, Ingo
dc.contributor.author Chadwick, P.M.
dc.contributor.author Chaves, R.C.G.
dc.contributor.author Chounet, L.M.
dc.contributor.author Clapson, A.C.
dc.contributor.author Daniel, M.K.
dc.contributor.author Dickinson, H.J.
dc.contributor.author Djannati-Ataï, A.
dc.contributor.author Drury, L.O'C
dc.contributor.author Fernandes, M.V.
dc.contributor.author Füßling, M.
dc.contributor.author HESS Collaboration
dc.date.accessioned 2012-09-04T13:01:11Z
dc.date.available 2012-09-04T13:01:11Z
dc.date.issued 2011
dc.identifier.citation HESS Collaboration et al. 2011. Revisiting the Westerlund 2 field with the HESS telescope array. Astronomy & astrophysics, 525(A46):1-8. [http://www.aanda.org] en_US
dc.identifier.issn 0004-6361
dc.identifier.issn 1432-0746 (Online)
dc.identifier.uri http://hdl.handle.net/10394/7228
dc.description.abstract Aims. Previous observations with the HESS telescope array revealed the existence of extended very-high-energy (VHE; E > 100 GeV) γ-ray emission, HESS J1023–575, coincident with the young stellar cluster Westerlund 2. At the time of discovery, the origin of the observed emission was not unambiguously identified, and follow-up observations have been performed to further investigate the nature of this γ-ray source. Methods. The Carina region towards the open cluster Westerlund 2 has been re-observed, increasing the total exposure to 45.9 h. The combined dataset includes 33 h of new data and now permits a search for energy-dependent morphology and detailed spectroscopy. Results. A new, hard spectrum VHE γ-ray source, HESS J1026–582, was discovered with a statistical significance of 7σ. It is positionally coincident with the Fermi LAT pulsar PSRJ1028–5819. The positional coincidence and radio/γ-ray characteristics of the LAT pulsar favors a scenario where the TeV emission originates from a pulsar wind nebula. The nature of HESS J1023–575 is discussed in light of the deep HESS observations and recent multi-wavelength discoveries, including the Fermi LAT pulsar PSRJ1022–5746 and giant molecular clouds in the region. Despite the improved VHE dataset, a clear identification of the object responsible for the VHE emission from HESS J1023–575 is not yet possible, and contribution from the nearby high-energy pulsar and/or the open cluster remains a possibility.
dc.description.uri http://dx.doi.org/10.1051/0004-6361/201015290
dc.description.uri http://www.aanda.org/index.php?option=com_article&access=standard&Itemid=129&url=/articles/aa/abs/2011/01/aa15290-10/aa15290-10.html
dc.language English
dc.publisher EDP Sciences
dc.title Revisiting the Westerlund 2 field with the HESS telescope array en_US
dc.type Journal

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search the NWU Repository

Advanced Search


My Account