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XMM-Newton observations of variability in the X-ray binaries of M31: flares dips and a burst

R. Barnard·U. C. Kolb·J. P. Osborne
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Abstract

The XMM-Newton satellite has made four observations of the core of M31 as part of a survey that will span the entire galaxy. The majority of the X-ray emission is contributed by point sources, chiefly X-ray Binaries (XB). Exciting early results from a survey of time variability in three XMM exposures of the M31 core reveal XB exhibiting Sco X-1 like flaring, dips and a burst. The flaring source in M31 also exhibits variability in intensity and spectral hardness that is characteristic of a Z-source.

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R. Barnard, U. C. Kolb, J. P. Osborne. 2002-03-27. XMM-Newton observations of variability in the X-ray binaries of M31: flares dips and a burst. https://arxiv.org/abs/astro-ph/0203475

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