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CREATED:20251007T121935Z
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SUMMARY:Webinaire Clément Baruteau
DESCRIPTION:Webinaire ASNUM\nClément Baruteau\nIRAP\nHydrodynamical simulations of the reflex instability in protoplanetary discs\nReplay : https://astrotube.obspm.fr/w/r34pJg4Y6LwExtiZwREV8z \n\nTheoretical studies of protoplanetary discs have a long history\, with many works on what instabilities may grow\, and how they impact disc evolution and planet formation. By running long-term hydrodynamical simulations of disc-planet interactions\, we have recently (and quite unexpectedly) uncovered what seems to be yet another instability in non-axisymmetric discs. It is a linear instability that takes the form of a growing m=1 mode arising from the reflex motion of the star around the barycentre of the star-disc-planet system\, and for this reason we refer to this instability as the reflex instability. It is found with a variety of grid-based codes as well as in smoothed particle hydrodynamics codes\, and it is likely relevant to astrophysical discs other than protoplanetary discs. In this webinar I will tell you all we currently know about the reflex instability.
URL:https://asnum.cnrs.fr/event/webinaire-clement-baruteau/
CATEGORIES:Webinaires
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