Aarhus University Seal / Aarhus Universitets segl

SAC Seminar - Travis Metcalfe: Magnetic Activity Cycles and the Solar-Stellar Connection

06.03.2013 | Brigitte Christina Harke Henderson

Dato ons 20 mar
Tid 15:15 16:00
Sted 1525-323

Speaker: Travis Metcalfe, Space Science Institute, Boulder, USA

Title: Magnetic Activity Cycles and the Solar-Stellar Connection

Abstract: Observations of magnetic activity cycles in other stars provide a broader context for our understanding of the 11-year sunspot cycle. The discovery of short activity cycles in a few stars, and the recognition of analogous variability in the Sun, suggest that there may be two distinct dynamos operating in different regions of the interior. Consequently, there is a natural link between studies of magnetic activity and seismology, which can characterize some of the internal properties that are relevant to dynamos. I will provide an historical overview of the connection between these two fields and I will discuss how recent observations of the young solar analog epsilon Eridani might teach us something useful about the rotational history of our own Sun.

Institut for Fysik og Astronomi, Medarbejdere, Offentligheden / Pressen