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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N- 157B with H.E.S.S.
Astronomy and Astrophysics, Volume 545, Article L2, Year 2012
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Description
We present the significant detection of the first extragalactic pulsar wind nebula (PWN) detected in gamma rays, N- 157B, located in the large Magellanic Cloud (LMC). Pulsars with high spin-down luminosity are found to power energised nebulae that emit gamma rays up to energies of several tens of TeV. N- 157B is associated with PSR- J0537-6910, which is the pulsar with the highest known spin-down luminosity. The High Energy Stereoscopic System telescope array observed this nebula on a yearly basis from 2004 to 2009 with a dead-time corrected exposure of 46- h. The gamma-ray spectrum between 600- GeV and 12- TeV is well-described by a pure power-law with a photon index of 2.8 ± 0.2stat ± 0.3syst and a normalisation at 1- TeV of (8.2 ± 0.8stat ± 2.5syst) × 10 -13 cm-2- s-1- TeV-1. A leptonic multi-wavelength model shows that an energy of about 4 × 1049 erg is stored in electrons and positrons. The apparent efficiency, which is the ratio of the TeV gamma-ray luminosity to the pulsar's spin-down luminosity, 0.08% ± 0.01%, is comparable to those of PWNe found in the Milky Way. The detection of a PWN at such a large distance is possible due to the pulsar's favourable spin-down luminosity and a bright infrared photon-field serving as an inverse-Compton-scattering target for accelerated leptons. By applying a calorimetric technique to these observations, the pulsar's birth period is estimated to be shorter than 10 ms. © 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
Balenderan, S.
United Kingdom, Durham
Durham University
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
Laboratoire Leprince-ringuet
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
Laboratoire Leprince-ringuet
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
Laboratoire Leprince-ringuet
Brun, Pierre
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Bulk, Tomasz
Poland, Warsaw
University of Warsaw
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
Albanova Universitetscentrum
Couturier, C.
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Dalton, Matthew L.
Germany, Berlin
Humboldt-universität zu Berlin
France, Bordeaux
Université de Bordeaux
Daniel, Michael K.
United Kingdom, Durham
Durham University
Davids, Isak Delberth
Namibia, Windhoek
University of Namibia
Degrange, Bernard
France, Palaiseau
Laboratoire Leprince-ringuet
Deil, Christoph
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Dickinson, Hugh J.
Sweden, Stockholm
Albanova Universitetscentrum
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, Saint Martin D'heres
Institut de Planétologie et D’astrophysique de Grenoble Ipag
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
Farnier, Christian
Sweden, Stockholm
Albanova Universitetscentrum
Fegan, Stephen J.
France, Palaiseau
Laboratoire Leprince-ringuet
Feinstein, Fabrice
France, Montpellier
Laboratoire Univers et Particules de Montpellier
Fernandes, Milton Virgílio
Germany, Hamburg
Universität Hamburg
Fernandez, Diane
France, Montpellier
Laboratoire Univers et Particules de Montpellier
Fiasson, Armand
France, Chambery
Université Savoie Mont Blanc
Fontaine, Gérard
France, Palaiseau
Laboratoire Leprince-ringuet
Förster, Andreas
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Füssling, Matthias
Germany, Berlin
Humboldt-universität zu Berlin
Gajdus, Michael
Germany, Berlin
Humboldt-universität zu Berlin
Gallant, Yves A.
France, Montpellier
Laboratoire Univers et Particules de Montpellier
Garrigoux, Tania
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Gast, Henning
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Gérard, Lucie
France, Paris
Apc - Astroparticule et Cosmologie
Giebels, Berrie
France, Palaiseau
Laboratoire Leprince-ringuet
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
Grondin, Marie Hélène
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Germany, Heidelberg
Landessternwarte Heidelberg
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, Saint Martin D'heres
Institut de Planétologie et D’astrophysique de Grenoble Ipag
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
Khélifi, Bruno
France, Palaiseau
Laboratoire Leprince-ringuet
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
Statistics
Citations: 100
Authors: 100
Affiliations: 30
Identifiers
Doi:
10.1051/0004-6361/201219906
ISSN:
00046361
e-ISSN:
14320746
Research Areas
Environmental