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DTSTAMP:20260424T090536Z
UID:1705919400@ist.ac.at
DTSTART:20240122T113000
DTEND:20240122T123000
DESCRIPTION:Speaker: Stephane Mathis\nhosted by Lisa Bugnet\nAbstract: Star
 s are the elementary building blocks of the Universe. Their evolution has 
 a profound impact on all fields of modern astrophysics\, from the largest 
 cosmological and galactic scales to the scales of planetary systems. Addit
 ionally\, stars are rotating\, host potentially strong magnetic fields\, a
 nd are among the most turbulent objects in the Universe. These dynamical p
 rocesses strongly influence their environment.However\, before the launch 
 of the Solar and Heliospheric Observatory (SOHO) to observe the Sun and th
 e CoRoT space mission to characterize stars hosting planets\, these dynami
 cal processes were largely ignored when studying the evolution of stars. S
 tars were considered to be spherical objects in hydrostatic and radiative 
 equilibrium\, evolving because of their internal nuclear reactions. We wer
 e blind to their internal dynamics.Less than 30 years later\, thanks to th
 e development of space-based helio- and asteroseismology\, we are now expl
 oring the rotation and magnetism of the Sun and of stars from their surfac
 e to their deep interior. Helio- and asteroseismic observations are challe
 nging the predictions of state-of-the-art stellar structure and evolution 
 models\, from our understanding of the chemical mixing occurring in stars 
 to our global understanding of momentum transport along their evolution.In
  this seminar\, I will give a global overview of our most recent progress 
 in modeling the magneto-hydrodynamical mechanisms in action in stars\, the
 ir successes\, and the remaining challenges. This will show how we are now
  aiming to understand the global circulation in stars\, as meteorologists 
 do for our Earth.
LOCATION:Raiffeisen Lecture Hall\, ISTA
ORGANIZER:arinya.eller@ist.ac.at
SUMMARY:Stephane Mathis: CANCELED: Stars in the age of space asteroseismolo
 gy: towards a coherent modeling of their dynamics along their evolution
URL:https://talks-calendar.ista.ac.at/events/4240
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