Images of an equatorial outflow in SS433

Amy Mioduszewski (NRAO Socorro); Katherine Blundell (Oxford); Michael Rupen (NRAO Socorro); Philipp Podsiadlowski (Oxford); Tom Muxlow (Jodrell Bank Observatory)

Images of an equatorial outflow in SS433

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arxiv astro-ph/0109504 v1 pith:5HBVV6JK submitted 2001-09-27 astro-ph

Katherine Blundell (Oxford) , Amy Mioduszewski (NRAO Socorro) , Tom Muxlow (Jodrell Bank Observatory) , Philipp Podsiadlowski (Oxford) , Michael Rupen (NRAO Socorro) This is my paper

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keywords binaryemissionoutflowsmoothss433systemvlbaappearance

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We have imaged the X-ray binary SS433 with unprecedented Fourier-plane coverage at 6cm using simultaneously the VLBA, MERLIN, and the VLA, and also at 20cm with the VLBA. At both wavelengths we have securely detected smooth, low-surface brightness emission having the appearance of a `ruff' or collar attached perpendicularly to the well-studied knotty jets in this system, extending over at least a few hundred AU. We interpret this smooth emission as a wind-like outflow from the binary, and discuss its implications for the present evolutionary stage of this system.

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