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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Correlated X-ray and very high energy emission in the gamma-ray binary LS i +61 303
Astrophysical Journal, Volume 706, No. 1 PART 2, Year 2009
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Description
The discovery of very high energy (VHE) gamma-ray emitting X-ray binaries has triggered an intense effort to better understand the particle acceleration, absorption, and emission mechanisms in compact binary systems, which provide variable conditions along eccentric orbits. Despite this, the nature of some of these systems, and of the accelerated particles producing the VHE emission, is unclear. To answer some of these open questions, we conducted a multiwavelength campaign of the VHE gamma-ray emitting X-ray binary LS I +61 303 including the MAGIC telescope, XMM-Newton, and Swift during 60% of an orbit in 2007 September. We detect a simultaneous outburst at X-ray and VHE bands, with the peak at phase 0.62 and a similar shape at both wavelengths. A linear fit to the simultaneous X-ray/VHE pairs obtained during the outburst yields a correlation coefficient of r = 0.97, while a linear fit to all simultaneous pairs provides r = 0.81. Since a variable absorption of the VHE emission towards the observer is not expected for the data reported here, the correlation found indicates a simultaneity in the emission processes. Assuming that they are dominated by a single particle population, either hadronic or leptonic, the X-ray/VHE flux ratio favors leptonic models. This fact, together with the detected photon indices, suggests that in LS I +61 303 the X-rays are the result of synchrotron radiation of the same electrons that produce VHE emission as a result of inverse Compton scattering of stellar photons. © 2009 The American Astronomical Society.
Authors & Co-Authors
Antonelli, Lucio Angelo
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Antoranz, Pedro
Spain, Madrid
Universidad Complutense de Madrid
Backes, Michael
Germany, Dortmund
Technische Universität Dortmund
Baixeras, Cármen
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Balestra, Silvia
Spain, Madrid
Universidad Complutense de Madrid
Barrio, Juan Abel
Spain, Madrid
Universidad Complutense de Madrid
Bastieri, D.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Becerra González, Josefa
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Becker, Julia K.
Germany, Dortmund
Technische Universität Dortmund
Bednarek, Włodzimierz
Poland, Lodz
University of Lodz
Berger, Karsten
Poland, Lodz
University of Lodz
Bernardini, Elisa
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Biland, Adrian
Switzerland, Zurich
Eth Zürich
Blanch, Oscar
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Bock, Rudolf K.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Bonnoli, Giacomo
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Bordas, Pol
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Bosch-Ramón, Valentí
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Bose, Debanjan
Spain, Madrid
Universidad Complutense de Madrid
Braun, Isabel
Switzerland, Zurich
Eth Zürich
Bretz, Thomas
Germany, Wurzburg
Julius-maximilians-universität Würzburg
Britzger, Daniel
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Carosi, Alessandro
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Colin, Pierre
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Commichau, Sebastian C.
Switzerland, Zurich
Eth Zürich
Contreras, José Luis
Spain, Madrid
Universidad Complutense de Madrid
Cortina, J.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Covino, Stefano
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Dazzi, Francesco
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
De Angelis, Alessandro D.
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
De Los Reyes, Raquel R.
Spain, Madrid
Universidad Complutense de Madrid
De Lotto, Barbara
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Domínguez, A. D.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Dominis-Prester, Dijana
Croatia, Zagreb
Institut Ruđer Bošković
Dorner, Daniela
Switzerland, Zurich
Eth Zürich
Doro, Michele
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Elsässer, Dominik
Germany, Wurzburg
Julius-maximilians-universität Würzburg
Errando, Manel
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Ferenc, Daniela
United States, Davis
University of California, Davis
Firpo, Roger
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Fonseca, M. V.
Spain, Madrid
Universidad Complutense de Madrid
Font, Ll L.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Galante, Nicola
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
García López, Ramón J.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, San Cristobal de la Laguna
Universidad de la Laguna
Garczarczyk, Markus
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Gaug, Markus
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Godinović, Nikola
Croatia, Zagreb
Institut Ruđer Bošković
Goebel, Florian
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Hadasch, Daniela
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Herrero Davó, Artemio Alonso
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, San Cristobal de la Laguna
Universidad de la Laguna
Hildebrand, Dorothée
Switzerland, Zurich
Eth Zürich
Hose, Juergen
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Hrupec, Dario
Croatia, Zagreb
Institut Ruđer Bošković
Hsu, C. C.
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Jogler, Tobias
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Klepser, Stefan
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Kranich, Daniel
Switzerland, Zurich
Eth Zürich
La Barbera, Antonino
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Laille, Alvin
United States, Davis
University of California, Davis
Lindfors, Elina J.
Finland, Turku
Turun Yliopisto
Lombardi, Saverio
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Longo, Francesco
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
López-Moya, Marcos
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Lorenz, Eckhart
Switzerland, Zurich
Eth Zürich
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Majumdar, Pratik
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Maneva, Galina M.
Bulgaria, Sofia
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
Mankuzhiyil, Nijil
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Mannheim, Karl
Germany, Wurzburg
Julius-maximilians-universität Würzburg
Maraschi, Laura
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Mariotti, M.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Martínez, Manel
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Mazin, Daniel
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Meucci, Mario
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Mirzoyan, Razmik G.
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Miyamoto, Hiroko
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Moldón, Javier
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Moles, Mariano
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Moralejo, Abelardo
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Nieto, Daniel
Spain, Madrid
Universidad Complutense de Madrid
Nilsson, Kari
Finland, Turku
Turun Yliopisto
Oya, Igor
Spain, Madrid
Universidad Complutense de Madrid
Paoletti, Riccardo
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Paredes, Josep Maria
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Pasanen, Mikko
Finland, Turku
Turun Yliopisto
Pascoli, Donatella
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Pauss, Felicitas
Switzerland, Zurich
Eth Zürich
Pegna, Raffaello G.
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Pérez-Torres, M. A.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Persic, Massimo
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Peruzzo, Luigi
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Prada, Francisco
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Prandini, Elisa
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Puljak, Ivica
Croatia, Zagreb
Institut Ruđer Bošković
Rhode, Wolfgang
Germany, Dortmund
Technische Universität Dortmund
Ribó, Marc
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Rico, Javier R.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
Robert, Arnau
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Saggion, Antonio
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Sánchez-Conde, Miguel A. A.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Scalzotto, Villi
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Schweizer, Thomas
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Shayduk, Maxim
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Shore, Steven N.
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Sillanp̈äa, Aimo K.
Finland, Turku
Turun Yliopisto
Sitarek, Julian
Poland, Lodz
University of Lodz
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Sobczyńska, Dorota
Poland, Lodz
University of Lodz
Spanier, Felix
Germany, Wurzburg
Julius-maximilians-universität Würzburg
Spiro, Susanna
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Stamerra, Antonio
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Stark, Luisa Sabrina
Switzerland, Zurich
Eth Zürich
Takalo, Leo O.
Finland, Turku
Turun Yliopisto
Tavecchio, Fabrizio
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Teshima, Masahiro
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Torres, Diego F.
Spain, Barcelona
Csic - Instituto de Ciencias Del Espacio Ice
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
Turini, Nicola
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Zabalza, Víctor
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Zanin, Roberta
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Falcone, Abraham D.
United States, University Park
Pennsylvania State University
Gehrels, Neil C.
United States, Washington, D.c.
National Aeronautics and Space Administration
Trushkin, Sergei A.
Russian Federation, Nizhny Arkhyz
Special Astrophysical Observatory, Russian Academy of Sciences
Dhawan, Vivek
United States, Socorro
National Radio Astronomy Observatory Socorro
Reig, P.
Greece, Rethymnon
University of Crete
Statistics
Citations: 61
Authors: 122
Affiliations: 28
Identifiers
Doi:
10.1088/0004-637X/706/1/L27
ISSN:
0004637X
Research Areas
Cancer
Environmental
Study Design
Cross Sectional Study