Splinter Meeting Activity

Solar and stellar activity and variability

Time: Thursday September 21, 14:00-16:30 and 17:00-19:00

Room: Auditorium

Convenors: H. Peter [1], M. Käpylä [1], P. Käpylä [2], N. Krivova [1], A. Reiners [3], S. Shapiro [1], J. Warnecke [1]
[1] MPS, Göttingen; [2] AIP, Potsdam; [3] IAG, Göttingen

The activity of stars, including the Sun, is driven by the magnetic field generated in the dynamo process. When emerging at the surface the concentrations of the magnetic field change the brightness of the star. Expanding further into the upper atmosphere, they largely control its dynamics and heating. Understanding solar and stellar activity therefore requires modelling and observational studies from the stellar interior all the way to the chromosphere and corona. Significant progress over the last decade greatly improved our understanding of solar and stellar activity and variability. This is based on the availability of data from solar and stellar observations as well as in numerical modelling of the dynamo and of stellar atmospheres. In this splinter we plan to bring together observational and modelling studies of the magnetic activity and brightness variations from both, the solar and the stellar perspective.


Related contributions *)

PresentationTitleType PDF
Amazo-GomezGPS: A novel method to obtain stellar rotational periodsTalk PDF
ChatzistergosConnecting chromospheric emission to photospheric magnetic fieldTalk PDF
KuzmychovStrong surface magnetic field on a brown dwarfTalk PDF
NorrisSpectral variability of photospheric radiation due to small-scale magnetic featuresTalk PDF
ReinholdEvidence for photometric activity cycles in 3203 Kepler starsTalk PDF
VivianiAxi- to non-axisymmetric dynamo transition in stellar models with varying rotation rateTalk PDF
WangMeasurements of Total Solar Irradiance on FengYun–3 Satellites, from 2008 to 2017Talk PDF
WuSolar Irradiance Reconstruction over Holocene: A Consistent Multi-proxy ReconstructionTalk PDF

*) submitted abstracts, acceptance pending.