Lead: Arnold Hanslmeier Current research field  Dynamics of the solar photosphere, small scale, large scale fields; solar dynamo action; small scale features and solar dynamo, solar variability on different timescales Current main research topics Solar variability  Convective energy transport on different time scales  Convective dynamics and relation photospheric/chromospheric dynamics  Long term solar variability/space weather and space climate effects Current personel 1 post doc, 2 doctorands, 3 master thesis Solar Variability IWF/ÖAW1

Data analysis of high resolution solar observations  Ground based observatory data from  VTT  GREGOR  Future telescopes ATST, EST  Space missions  Hinode  SDO  SUNRISE  Upcoming missions  High resolution observations  Implication for Sun as a star  Comparison with HD, MHD high resolution models Methodology IWF/ÖAW2 spectropolarimetry

Questions to be solved  What is the variation of solar convective dynamics over solar activity cycle  What is the contribution of convective energy transport to solar irradiance variations  What is the connection of small scale processes with turbulent waves and transport of magnetic flux in the photosphere/lower chromosphere  How can these processes be deduced from models  What are the implications for solar like stars, space weather and space climate Open questions within the research field IWF/ÖAW3

 use the Sun as prototype for stars to study  Excitation  Propagation  Variation of parameters such as  Velocity fields  Temperature fields  Pressure gradients  Instabilities  Implications for near-Sun environment  Space weather  Space climate  What can be expected for planets  Ongoing cooperation  Kiepenheuer Institut/AIP; Tatranska Lomnica; Pic du Midi;  Networking: Solarnet, Access to VTT/GREGOR, satellite data  Vienna: Inst. Mathematics Proposal for common topics IWF/ÖAW4 Waves, disturbances, turbulent processes Over solar cylce

Relevant research areas Graz  Space weather related studies  Lower chromopshere/corona coupling  Solar like stars  Exoplanets near solar like stars; space weather effects Common borders IWF/ÖAW5 Vienna  solar like stars  Extrasolar systems Innsbruck  Galactic evolution/dynamics, metal gradients