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DTSTAMP:20260424T143153Z
UID:1700476200@ist.ac.at
DTSTART:20231120T113000
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DESCRIPTION:Speaker: Stephane Mathis\nhosted by Lisa Bugnet\nAbstract: PLEA
 SE NOTE THAT THIS TALK HAS BEEN POSTPONED AND WILL NOT TAKE PLACE ON NOV. 
 20.Stars are the elementary building blocks of the Universe. Their evoluti
 on has a profound impact on all fields of modern astrophysics\, from the l
 argest cosmological and galactic scales to the scales of planetary systems
 . Additionally\, stars are rotating\, host potentially strong magnetic fie
 lds\, and are among the most turbulent objects in the Universe. These dyna
 mical processes strongly influence their environment.However\, before the 
 launch of the Solar and Heliospheric Observatory (SOHO) to observe the Sun
  and the CoRoT space mission to characterize stars hosting planets\, these
  dynamical processes were largely ignored when studying the evolution of s
 tars. Stars were considered to be spherical objects in hydrostatic and rad
 iative equilibrium\, evolving because of their internal nuclear reactions.
  We were blind to their internal dynamics.Less than 30 years later\, thank
 s to the development of space-based helio- and asteroseismology\, we are n
 ow exploring the rotation and magnetism of the Sun and of stars from their
  surface to their deep interior. Helio- and asteroseismic observations are
  challenging the predictions of state-of-the-art stellar structure and evo
 lution models\, from our understanding of the chemical mixing occurring in
  stars to our global understanding of momentum transport along their evolu
 tion.In this seminar\, I will give a global overview of our most recent pr
 ogress in modeling the magneto-hydrodynamical mechanisms in action in star
 s\, their successes\, and the remaining challenges. This will show how we 
 are now aiming to understand the global circulation in stars\, as meteorol
 ogists do for our Earth.
LOCATION:Raiffeisen Lecture Hall\, ISTA
ORGANIZER:arinya.eller@ist.ac.at
SUMMARY:Stephane Mathis: POSTPONED: Stars in the age of space asteroseismol
 ogy: towards a coherent modeling of their dynamics along their evolution
URL:https://talks-calendar.ista.ac.at/events/4233
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