# X-rays from α Centauri – The darkening of the solar twin

@article{Robrade2005XraysF,
title={X-rays from $\alpha$ Centauri – The darkening of the solar twin},
author={J. Robrade and J{\"u}rgen H. M. M. Schmitt and F. Favata Hamburger Sternwarte and Universitaet Hamburg and H Germany and Astrophysics Division - Research and Science Support Department of Esa and Estec and Noordwijk and The Netherlands.},
journal={Astronomy and Astrophysics},
year={2005},
volume={442},
pages={315-321}
}
• Published 11 August 2005
• Physics
• Astronomy and Astrophysics
We present first results from five XMM-Newton observations of the binary system α Centauri, which has been observed in snapshot like exposures of roughly two hours each during the last two years. In all our observations the X-ray emission of the system is dominated by α Cen B, a K1 star. The derived light curves of the individual components reveal variability on short timescales and a flare was discovered on α Cen B during one observation. A PSF fitting algorithm is applied to the event…

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