Doppler imaging an X-ray flare on the ultrafast rotator BO Mic - A contemporaneous multiwavelength

  title={Doppler imaging an X-ray flare on the ultrafast rotator BO Mic - A contemporaneous multiwavelength},
  author={Uwe Wolter and Jan Robrade and J{\"u}rgen H. M. M. Schmitt and J.‐U. Ness},
  journal={Astronomy and Astrophysics},
We present an analysis of contemporaneous photospheric, chromospheric and coronal structures on the highly active K-dwarf star BO Mic (Speedy Mic). We concentrate on a moderate flare that we localize in the stellar atmosphere and study its energetics, size and thermal behavior. The analysis is based on strictly simultaneous X-ray, UV- and optical observations carried out by XMM-Newton and the VLT. We use Doppler imaging and related methods for the localization of features. Based on X-ray… 

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