Director of the Solar and Stellar Interiors Department

Prof. Dr. Laurent Gizon
Phone:+49 551 384 979 439Fax:+49 551 384 979 240

Personal website


Ms. Sabine Deutsch
Phone:+49 551 384 979-299Fax:+49 551 384 979-240

Solar and Stellar Interiors department, September 2015

Group photo, September 2015 Zoom Image
Group photo, September 2015

Solar and Stellar Interiors Department

Solar and Stellar Interiors

In collaboration with the University of Göttingen

Congratulations to our newest PhD graduates!

Björn Löptien, Jan Langfellner,  Emanuele Papini und Martin Bo Nielsen. <span>Martin was awarded the "</span><span>Berliner und Ungewitter Dissertationspreis 2016".</span> Zoom Image
Björn Löptien, Jan Langfellner,  Emanuele Papini und Martin Bo Nielsen. Martin was awarded the "Berliner und Ungewitter Dissertationspreis 2016". [less]

Research - Helioseismology and Asteroseismology

One of the most important unsolved problems in solar physics today is the origin of the Sun’s eleven-year magnetic cycle. More generally, activity cycles in cool stars with convective envelopes are not understood. These cycles are expected to be the result of the interplay between flows (e.g., rotation, meridional circulation, convection) and magnetic fields and are described by dynamo models. It is not clear, however, how and where the dynamos operate, and what sets the periods of activity cycles. The reason for this lack of understanding is the absence of sufficient empirical information about subsurface dynamics in solar and stellar interiors.

Helioseismology is the use of stochastically excited solar oscillations as probes of the interior of the Sun. Asteroseismology is a generalization of helioseismology to the study of oscillations of other stars. These tools allow us to test and refine the theory of stellar structure and evolution and to study thermal structures and flows in the interior of the Sun and stars, thereby bringing us closer to understanding solar and stellar magnetism. Further, asteroseismology allows us to place the Sun in the context of other similar stars and to study the possible futures and pasts of the Sun.

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