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Discovery of very high energy gamma rays associated with an x-ray binary.

Aharonian, F. and Akhperjanian, A. G. and Aye, K.-M. and Bazer-Bachi, A. R. and Beilicke, M. and Benbow, W. and Berge, D. and Berghaus, P. and Bernlöhr, K. and Boisson, C. and Bolz, O. and Borrel, V. and Braun, I. and Breitling, F. and Brown, A. M. and Bussons Gordo, J. and Chadwick, P. M. and Chounet, L.-M. and Cornils, R. and Costamante, L. and Degrange, B. and Dickinson, H. J. and Djannati-Ataï, A. and Drury, L. O'C. and Dubus, G. and Emmanoulopoulos, D. and Espigat, P. and Feinstein, F. and Fleury, P. and Fontaine, G. and Fuchs, Y. and Funk, S. and Gallant, Y. A. and Giebels, B. and Gillessen, S. and Glicenstein, J. F. and Goret, P. and Hadjichristidis, C. and Hauser, M. and Heinzelmann, G. and Henri, G. and Hermann, G. and Hinton, J. A. and Hofmann, W. and Holleran, M. and Horns, D. and Jacholkowska, A. and de Jager, O. C. and Khélifi, B. and Komin, N. and Konopelko, A. and Latham, I. J. and Le Gallou, R. and Lemière, A. and Lemoine-Goumard, M. and Leroy, N. and Lohse, T. and Marcowith, A. and Martin, J.-M. and Martineau-Huynh, O. and Masterson, C. and McComb, T. J. L. and de Naurois, M. and Nolan, S. J. and Noutsos, A. and Orford, K. J. and Osborne, J. L. and Ouchrif, M. and Panter, M. and Pelletier, G. and Pita, S. and Pühlhofer, G. and Punch, M. and Raubenheimer, B. C. and Raue, M. and Raux, J. and Rayner, S. M. and Reimer, A. and Reimer, O. and Ripken, J. and Rob, L. and Rolland, L. and Rowell, G. and Sahakian, V. and Saugé, L. and Schlenker, S. and Schlickeiser, R. and Schuster, C. and Schwanke, U. and Siewert, M. and Sol, H. and Spangler, D. and Steenkamp, R. and Stegmann, C. and Tavernet, J.-P. and Terrier, R. and Théoret, C. G. and Tluczykont, M. and Vasileiadis, G. and Venter, C. and Vincent, P. and Völk, H. J. and Wagner, S. (2005) 'Discovery of very high energy gamma rays associated with an x-ray binary.', Science., 309 (5735). pp. 746-749.

Abstract

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 -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

Item Type:Article
Keywords:STAR LSI &61-degrees-303, Microquasar LS-5039, Galactic plane, System, Galaxy, Model.
Full text:PDF - Other (170Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1126/science.1113764
Record Created:08 May 2008
Last Modified:24 Jul 2014 16:51

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