Stellar activity: Chromospheric and photospheric structures, starspot and theirevolution, flares, etc.
High-resolution optical spectroscopy, preferably of fast rotating, highly active cool stars.
Exoplanets and their host stars
(ex Research Training Group GrK 1351).
Imaging a stellar flare!
ESO Press release 2007 News article (in German) Same image without Doppler map
Photomontage based on solar images and a
Doppler map of the highly active star BO Mic
("Speedy Mic"). The blue circle indicates the
flare observed in October 2006 using ESO's VLT telescope and ESA's XMM-Newton satellite.
(NASA/TRACE, High Altitude Observatory, Hamburger Sternwarte, Astronomy and Astrophysics)