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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Discovery of VHE emission towards the Carina arm region with the H.E.S.S. telescope array: HESS? J1018-589
Astronomy and Astrophysics, Volume 541, Article A5, Year 2012
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Description
The Carina arm region, containing the supernova remnant SNR? G284.3-1.8, the high-energy (HE; E > 100 MeV) binary 1FGL? J1018.6-5856 and the energetic pulsar PSR? J1016-5857 and its nebula, has been observed with the H.E.S.S. telescope array. The observational coverage of the region in very-high-energy (VHE; E > 0.1? TeV) γ-rays benefits from deep exposure (40? h) of the neighboring open cluster Westerlund 2. The observations have revealed a new extended region of VHE γ-ray emission. The new VHE source HESS? J1018-589 shows a bright, point-like emission region positionally coincident with SNR? G284.3-1.8 and 1FGL? J1018.6-5856 and a diffuse extension towards the direction of PSR? J1016-5857. A soft (Γ = 2.7 ± 0.5stat) photon? index, with a differential flux at 1? TeV of N0 = (4.2 ± 1.1) × 10-13? TeV-1? cm-2? s-1 is found for the point-like source, whereas the total emission region including the diffuse emission region is well fit by a power-law function with spectral index Γ = 2.9 ± 0.4stat and differential flux at 1? TeV of N0 = (6.8 ± 1.6) × 10-13? TeV-1? cm-2? s-1. This H.E.S.S. detection motivated follow-up X-ray observations with the XMM-Newton satellite to investigate the origin of the VHE emission. The analysis of the XMM-Newton data resulted in the discovery of a bright, non-thermal point-like source (XMMU J101855.4-58564) with a photon index of Γ = 1.65 ± 0.08 in the center of SNR? G284.3-1.8, and a thermal, extended emission region coincident with its bright northern filament. The characteristics of this thermal emission are used to estimate the plasma density in the region as n 0.5 cm-3 (2.9? kpc/d)2. The position of XMMU? J101855.4-58564 is compatible with the position reported by the Fermi-LAT collaboration for the binary system 1FGL? J1018.6-5856 and the variable Swift XRT source identified with it. The new X-ray data are used alongside archival multi-wavelength data to investigate the relationship between the VHE γ-ray emission from HESS? J1018-589 and the various potential counterparts in the Carina arm region. © ESO, 2012.
Authors & Co-Authors
Abramowski, Attila
Germany, Hamburg
Universität Hamburg
Acero, Fabio
France, Montpellier
Laboratoire Univers et Particules de Montpellier
Aharonian, F. A.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Ireland, Dublin
Institiúid Ard-lénn Bhaile Átha Cliath
Armenia, Yerevan
National Academy of Sciences of the Republic of Armenia
Akhperjanian, Ashot G.
Armenia, Yerevan
National Academy of Sciences of the Republic of Armenia
Armenia, Yerevan
Yerevan Physics Institute
Anton, Gisela K.Stycz
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Balzer, Arnim
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Barnacka, Anna
Poland, Warsaw
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Becherini, Yvonne
France, Paris
Apc - Astroparticule et Cosmologie
France, Palaiseau
École Polytechnique
Becker, Julia K.
Germany, Bochum
Ruhr-universitat Bochum
Bernlöhr, Konrad
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Germany, Berlin
Humboldt-universität zu Berlin
Birsin, Emrah
Germany, Berlin
Humboldt-universität zu Berlin
Biteau, Jonathan
France, Palaiseau
École Polytechnique
Bochow, Anne
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Boisson, Catherine
France, Meudon
Luth - Laboratoire de L'univers et de Ses Theories
Bolmont, Julien
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Bordas, Pol
Germany, Tubingen
Eberhard Karls Universität Tübingen
Brucker, Julia
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Brun, François
France, Palaiseau
École Polytechnique
Brun, Pierre
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Bulk, Tomasz
Poland, Warsaw
University of Warsaw
Büsching, Ingo
Germany, Bochum
Ruhr-universitat Bochum
South Africa, Potchefstroom
North-west University
Carrigan, Svenja
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Casanova, Sabrina
Germany, Heidelberg
Max-planck-institut Für Kernphysik
South Africa, Potchefstroom
North-west University
Cerruti, Matteo
France, Meudon
Luth - Laboratoire de L'univers et de Ses Theories
Chadwick, Paula M.
United Kingdom, Durham
Durham University
Charbonnier, Ald́ee
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Chaves, Ryan C.G.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Cheesebrough, A.
United Kingdom, Durham
Durham University
Cologna, Gabriele
Germany, Heidelberg
Landessternwarte Heidelberg
Conrad, Jan
Sweden, Stockholm
Stockholms Universitet
Dalton, Matthew L.
Germany, Berlin
Humboldt-universität zu Berlin
Daniel, Michael K.
United Kingdom, Durham
Durham University
Davids, Isak Delberth
Namibia, Windhoek
University of Namibia
Degrange, Bernard
France, Palaiseau
École Polytechnique
Deil, Christoph
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Dickinson, Hugh J.
Sweden, Stockholm
Stockholms Universitet
Djannati-Ataï, Arache
France, Paris
Apc - Astroparticule et Cosmologie
Domainko, Wilfried F.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Drury, Luke O'C
Ireland, Dublin
Institiúid Ard-lénn Bhaile Átha Cliath
Dubus, Guillaume
France, Paris
Cnrs Centre National de la Recherche Scientifique
Dutson, Kate L.
United Kingdom, Leicester
University of Leicester
Dyks, Jarosław
Poland, Warsaw
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
Dyrda, Michael
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Egberts, Kathrin
Austria, Innsbruck
Medizinische Universitat Innsbruck
Eger, Peter A.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Espigat, P.
France, Paris
Apc - Astroparticule et Cosmologie
Fallon, Lisa
Ireland, Dublin
Institiúid Ard-lénn Bhaile Átha Cliath
Fegan, Stephen J.
France, Palaiseau
École Polytechnique
Feinstein, Fabrice
France, Montpellier
Laboratoire Univers et Particules de Montpellier
Fernandes, Milton Virgílio
Germany, Hamburg
Universität Hamburg
Fiasson, Armand
France, Chambery
Université Savoie Mont Blanc
Fontaine, Gérard
France, Palaiseau
École Polytechnique
Förster, Andreas
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Füssling, Matthias
Germany, Berlin
Humboldt-universität zu Berlin
Gallant, Yves A.
France, Montpellier
Laboratoire Univers et Particules de Montpellier
Gast, Henning
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Gérard, Lucie
France, Paris
Apc - Astroparticule et Cosmologie
Gerbig, Dennis
Germany, Bochum
Ruhr-universitat Bochum
Giebels, Berrie
France, Palaiseau
École Polytechnique
Glicenstein, Jean François
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Glück, B.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Göring, D.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Häffner, Stephanie
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Hague, J. D.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Hahn, Joachim
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Hampf, Daniel
Germany, Hamburg
Universität Hamburg
Harris, Jonathan
United Kingdom, Durham
Durham University
Hauser, Marcus
Germany, Heidelberg
Landessternwarte Heidelberg
Heinz, Sebastian
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Heinzelmann, Götz
Germany, Hamburg
Universität Hamburg
Henri, Gilles
France, Paris
Cnrs Centre National de la Recherche Scientifique
Hermann, German
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Hillert, Andreas
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Hinton, James A.J.A.
United Kingdom, Leicester
University of Leicester
Hofmann, Werner
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Hofverberg, Petter
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Holler, Markus
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Horns, Dieter
Germany, Hamburg
Universität Hamburg
Jachołkowska, Agnieszka
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
de Jager, Ocker C.
South Africa, Potchefstroom
North-west University
Jahn, C.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Jamrozy, Marek
Poland, Krakow
Uniwersytet Jagielloński
Jung-Richardt, Ira V.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Kastendieck, Max Anton
Germany, Hamburg
Universität Hamburg
Katarzyński, Krzysztof
Poland, Torun
Uniwersytet Mikołaja Kopernika w Toruniu
Katz, Ulrich F.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Kaufmann, Sarah
Germany, Heidelberg
Landessternwarte Heidelberg
Keogh, D.
United Kingdom, Durham
Durham University
Khélifi, Bruno
France, Palaiseau
École Polytechnique
Klochkov, Dmitry K.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Kluź Niak, W.
Poland, Warsaw
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
Kneiske, Tanja M.
Germany, Hamburg
Universität Hamburg
Komin, Nukri
France, Chambery
Université Savoie Mont Blanc
Kosack, Karl
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Kossakowski, Roman
France, Chambery
Université Savoie Mont Blanc
Krayzel, Fabien
France, Chambery
Université Savoie Mont Blanc
Laffon, Hélène
France, Palaiseau
École Polytechnique
Lamanna, Giovanni
France, Chambery
Université Savoie Mont Blanc
Lenain, Jean Philippe
Germany, Heidelberg
Landessternwarte Heidelberg
Lennarz, Dirk
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Statistics
Citations: 100
Authors: 100
Affiliations: 29
Identifiers
Doi:
10.1051/0004-6361/201218843
ISSN:
00046361
e-ISSN:
14320746
Research Areas
Environmental
Health System And Policy
Study Design
Cohort Study