Astraios Courses

Astero- and helioseismology  

Description

Basic issues and concepts: oscillation mode, identification of modes, seismic model of a star, evolutionary period changes. Helioseismology: short history, properties of solar oscillations, asymptotic relations, principles of helioseismic inversion, inversion for solar rotation and solar structure. Heat driven pulsators: δ Scuti stars, β Cephei stars, Slowly Pulsating B-type (SPB) stars, γ Doradus stars, constraints on: rotational profile, element mixing processes, efficiency of convection, opacity data. Compact pulsators: white dwarfs (WD: DAV, DBV, DOV), hot subdwarfs (sdB, sdO), WD and sdB pulsators as a boundary condition for stellar evolution theory, WD pulsators as Galactic chronometers, WD pulsators as cosmic laboratories for fundamental physics. Solar-like pulsators: asteroseismic diagnostic signatures, asteroseismic diagram, scaling relations, main sequence stars, subgiants, red giants.

Delivery mode

Presential
English

Name

Astero- and helioseismology
English

UNIVERSITY OF TWENTE

Faculty of Geo-Information Science and Earth Observation

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Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or HaDEA. Neither the European Union nor the granting authority can be held responsible for them. The statements made herein do not necessarily have the consent or agreement of the ASTRAIOS Consortium. These represent the opinion and findings of the author(s).