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First detection of phase-dependent colliding wind X-ray emission outside the Milky Way

Yael Naze·Michael F. Corcoran·Gloria Koenisgberger·Anthony F. J. Moffat
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Abstract

After having reported the detection of X-rays emitted by the peculiar system HD5980, we assess here the origin of this high-energy emission from additional X-ray observations obtained with XMM-Newton. This research provides the first detection of apparently periodic X-ray emission from hot gas produced by the collision of winds in an evolved massive binary outside the Milky Way. It also provides the first X-ray monitoring of a Luminous Blue Variable only years after its eruption and shows that the dominant source of the X-rays is not associated with the ejecta.

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Yael Naze, Michael F. Corcoran, Gloria Koenisgberger, Anthony F. J. Moffat. 2007-02-15. First detection of phase-dependent colliding wind X-ray emission outside the Milky Way. https://doi.org/10.1086/513510

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