Author: Rudolf KommThe active region 10486 that produced the Halloween flares in 2003 initiated our interest in the kinetic helicity of subsurface flows associated with active regions. This lead to the realization that the helicity of subsurface fl ... more
Author: Joergen Christensen-DalsgaardThe SONG Hertzsprung telescope, at the Observatorio del Teide, Izana, Tenerife, is a prototype for the telescopes in the planned SONG (Stellar Observations Network Group) network for asteroseismology and exoplanet studies. It has ... more
Author: Markus RothIn the coming four years the governance structure for the European Solar Telescope (EST) needs to be defined. For this various governance models for multi-national collaborations need to be studied.
In this presentation I will d ... more
Author: Laurene JouveWe will review recent progress made in modeling solar-type stars in 2D and 3D in the recent years. In particular, we will focus on advances in our understanding of the dynamo processes in such astrophysical objects and the necessa ... more
Author: Anne-Marie BroomhallThe Sun’s magnetic activity cycle varies primarily on a time scale of 11yrs from minimum to maximum and back again. It is well-known that the properties of the Sun’s acoustic oscillations are affected by the near-surface inter ... more
Author: Saskia HekkerAsteroseismology — the study of stellar interiors through their global oscillations — has been revolutionised with the launch of dedicated space missions. The CoRoT and Kepler satellites perform(ed) high precision photometric ... more
Author: Christoph KuckeinAn M3.2 flare was observed in 2013 May 17 with the Vacuum Tower Telescope (VTT, Tenerife, Spain) at a heliocentric angle of 0.8. The observations covered the activation, impulsive, and relaxation phases of the flare. This work is ... more
Author: Sebastien DeheuvelsSince the detection of non-radial oscillations in over 10,000 red giants by space missions CoRoT and Kepler, the seismology of these objects has rightfully gained interest among the stellar physics community. The detection of mixe ... more
Author: George AngelouOver 35 years ago, it was proposed that there exists diagnostic potential in combining the small
and large frequency separations for solar-like oscillators.
Since then, we have been spoilt with a plethora long-timeseries photome ... more