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}
}
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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