An X-ray View of the Interacting Binary Beta Lyrae with Suzaku

Astronomy and Astrophysics – Astronomy

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Scientific paper

The famous interacting and eclipsing binary beta Lyr shows a variety of interesting dynamic processes, with a circumbinary disk, magnetic fields, jets, and mass transfer, likely between a pair of B stars. The system has been well-studied in most wavebands, except for the X-rays. Beta Lyr was detected by Einstein suggesting a rather hard spectrum. Consequently, we observed this binary in 2006 May with the XIS of Suzaku at three roughly equally spaced phases within its orbit. According to the optical light curve, one exposure was entirely out of eclipse, one was midway in egress of secondary eclipse, and one was midway through ingress of primary eclipse. A preliminatry inspection of the light curve and three spectra indicate little or no change in the X-rays. We offer tentative conclusions about the location of the hot plasma in this system. This research is supported through a NASA grant award, NNX06AI04G.

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