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The disk/jet connection in the enigmatic microquasar Cygnus X-3

Published online by Cambridge University Press:  24 February 2011

Karri I. I. Koljonen ,
Diana C. Hannikainen ,
Michael L. McCollough ,
Guy G. Pooley ,
Sergei A. Trushkin ,
Marco Tavani  and
Robert Droulans
Karri I. I. Koljonen
Affiliation:
Aalto University Metsähovi Radio Observatory, Metsähovintie 114, 02540 Kylmälä, Finland email: [email protected]
Diana C. Hannikainen
Affiliation:
Aalto University Metsähovi Radio Observatory, Metsähovintie 114, 02540 Kylmälä, Finland email: [email protected] Finnish Centre for Astronomy with ESO (FINCA), University of Turku, Väisäläntie 20, FI-21500 Piikkiö, Finland
Michael L. McCollough
Affiliation:
Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138-1516, USA
Guy G. Pooley
Affiliation:
Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE, UK
Sergei A. Trushkin
Affiliation:
Special Astrophysical Observarory RAS, Karachaevo-Cherkassian res, Nizhnij Arkhyz, 36916, Russia
Marco Tavani
Affiliation:
INAF-IASF, I-00133 Rome, Italy
Robert Droulans
Affiliation:
CESR/CNRS – Université de Toulouse, 9 Av. du Colonel Roche, 31028 Toulouse Cedex 04, France
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Abstract

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Simultaneous multi-wavelength observations are crucial for understanding the physics of microquasars, especially the accretion disk/jet connection. The enigmatic microquasar Cygnus X-3 exhibits strong, relativistic jet ejection events producing radio flares up to 20 Jy. These events are preceded by a very soft X-ray state with quenched emission in the radio and hard X-ray bands. Recently, GeV flux was observed by the AGILE and Fermi γ-ray observatories during the newly-identified hypersoft state. By using an extensive database of simultaneous multi-wavelength observations gathered from Cygnus X-3 we can form a more unified picture of the nature of the source and show how the recent γ-ray observations fit into it.

Keywords

Accretionaccretion disks – Binaries: close – Gamma rays: observations – Radio continuum: stars – Stars: windsoutflows – X-rays: binaries – X-rays: individual: Cygnus X-3
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S275: Jets at all Scales , September 2010 , pp. 285 - 289
Copyright
Copyright © International Astronomical Union 2011

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