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Microquasars: A Galactic-Extragalactic Connection?

Published online by Cambridge University Press:  05 March 2013

Kinwah Wu
Affiliation:
Mullard Space Science Laboratory, University College London, Holmbury St Mary, Surrey, RH5 6NT, United Kingdom; [email protected] School of Physics, University of Sydney, NSW 2006, Australia
Jason A. Stevens
Affiliation:
Mullard Space Science Laboratory, University College London, Holmbury St Mary, Surrey, RH5 6NT, United Kingdom Astronomy Technology Center, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, United Kingdom; [email protected]
Diana C. Hannikainen
Affiliation:
Department of Physics and Astronomy, Southampton University, Southampton, SO17 1BJ, United Kingdom; [email protected]
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Abstract

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Microquasars are Galactic X-ray binaries which show radio emission from relativistic outflows. Here we argue that the origins of radio emission from microquasars and compact extragalactic radio sources are similar. In particular, both can be explained qualitatively by a model in which shocks are propagating in the relativistic jets. The microquasar GRO J1655–40 is used to illustrate that the spectral evolution of its 1994 radio outburst can be explained by the growth phase of the generalised-shock model, similar to the case of the quasar 3C 273.

Type
Research Article
Copyright
Copyright © Astronomical Society of Australia 2002

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