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23 April 2024

» pubmed » pmid16002580

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Discovery of very high energy gamma rays associated with an x-ray binary
F Aharonian ; A G Akhperjanian ; K-M Aye ; A R Bazer-Bachi ; M Beilicke ; W Benbow ; D Berge ; P Berghaus ; K Bernlöhr ; C Boisson ; O Bolz ; V Borrel ; I Braun ; F Breitling ; A M Brown ; J Bussons Gordo ; P M Chadwick ; L-M Chounet ; R Cornils ; L Costamante ; B Degrange ; H J Dickinson ; A Djannati-Ataï ; L O’c Drury ; G Dubus ; D Emmanoulopoulos ; P Espigat ; F Feinstein ; P Fleury ; G Fontaine ; Y Fuchs ; S Funk ; Y A Gallant ; B Giebels ; S Gillessen ; J F Glicenstein ; P Goret ; C Hadjichristidis ; M Hauser ; G Heinzelmann ; G Henri ; G Hermann ; J A Hinton ; W Hofmann ; M Holleran ; D Horns ; A Jacholkowska ; O C de Jager ; B Khélifi ; Nu Komin ; A Konopelko ; I J Latham ; R Le Gallou ; A Lemière ; M Lemoine-Goumard ; N Leroy ; T Lohse ; A Marcowith ; J-M Martin ; O Martineau-Huynh ; C Masterson ; T J L McComb ; M de Naurois ; S J Nolan ; A Noutsos ; K J Orford ; J L Osborne ; M Ouchrif ; M Panter ; G Pelletier ; S Pita ; G Pühlhofer ; M Punch ; B C Raubenheimer ; M Raue ; J Raux ; S M Rayner ; A Reimer ; O Reimer ; J Ripken ; L Rob ; L Roll ; G Rowell ; V Sahakian ; L Saugé ; S Schlenker ; R Schlickeiser ; C Schuster ; U Schwanke ; M Siewert ; H Sol ; D Spangler ; R Steenkamp ; C Stegmann ; J-P Tavernet ; R Terrier ; C G Théoret ; M Tluczykont ; G Vasileiadis ; C Venter ; P Vincent ; H J Völk ; S J Wagner ;
Date:	29 Jul 2005
Journal:	Science, 309 (5735), 746-9
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 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.
Source:	PubMed, pmid16002580 doi: 10.1126/science.1113764
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