Publication Date:
2005-07-09
Description:
X-ray binaries are composed of a normal star in orbit around a neutron star or stellar-mass black hole. Radio and x-ray observations have led to the presumption that some x-ray binaries called microquasars behave as scaled-down active galactic nuclei. Microquasars have resolved radio emission that is thought to arise from a relativistic outflow akin to active galactic nuclei jets, in which particles can be accelerated to large energies. Very high energy gamma-rays produced by the interactions of these particles have been observed from several active galactic nuclei. Using the High Energy Stereoscopic System, we find evidence for gamma-ray emission of 〉100 gigaelectron volts from a candidate microquasar, LS 5039, showing that particles are also accelerated to very high energies in these systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aharonian, F -- Akhperjanian, A G -- Aye, K-M -- Bazer-Bachi, A R -- Beilicke, M -- Benbow, W -- Berge, D -- Berghaus, P -- Bernlohr, K -- Boisson, C -- Bolz, O -- Borrel, V -- Braun, I -- Breitling, F -- Brown, A M -- Bussons Gordo, J -- Chadwick, P M -- Chounet, L-M -- Cornils, R -- Costamante, L -- Degrange, B -- Dickinson, H J -- Djannati-Atai, A -- Drury, L O'c -- Dubus, G -- Emmanoulopoulos, D -- Espigat, P -- Feinstein, F -- Fleury, P -- Fontaine, G -- Fuchs, Y -- Funk, S -- Gallant, Y A -- Giebels, B -- Gillessen, S -- Glicenstein, J F -- Goret, P -- Hadjichristidis, C -- Hauser, M -- Heinzelmann, G -- Henri, G -- Hermann, G -- Hinton, J A -- Hofmann, W -- Holleran, M -- Horns, D -- Jacholkowska, A -- de Jager, O C -- Khelifi, B -- Komin, Nu -- Konopelko, A -- Latham, I J -- Le Gallou, R -- Lemiere, A -- Lemoine-Goumard, M -- Leroy, N -- Lohse, T -- Marcowith, A -- Martin, J-M -- Martineau-Huynh, O -- Masterson, C -- McComb, T J L -- de Naurois, M -- Nolan, S J -- Noutsos, A -- Orford, K J -- Osborne, J L -- Ouchrif, M -- Panter, M -- Pelletier, G -- Pita, S -- Puhlhofer, G -- Punch, M -- Raubenheimer, B C -- Raue, M -- Raux, J -- Rayner, S M -- Reimer, A -- Reimer, O -- Ripken, J -- Rob, L -- Rolland, L -- Rowell, G -- Sahakian, V -- Sauge, L -- Schlenker, S -- Schlickeiser, R -- Schuster, C -- Schwanke, U -- Siewert, M -- Sol, H -- Spangler, D -- Steenkamp, R -- Stegmann, C -- Tavernet, J-P -- Terrier, R -- Theoret, C G -- Tluczykont, M -- Vasileiadis, G -- Venter, C -- Vincent, P -- Volk, H J -- Wagner, S J -- New York, N.Y. -- Science. 2005 Jul 29;309(5735):746-9. Epub 2005 Jul 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max-Planck-Institut fur Kernphysik, Post Office Box 103980, D-69029 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16002580" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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