11-15 May 2020
Leibniz Institute for Astrophysics Potsdam (AIP)
Europe/Berlin timezone

Ring/gaps formation driven by MHD winds in protoplanetary discs

15 May 2020, 09:00
20m
Lecture Hall (Leibniz Institute for Astrophysics Potsdam (AIP))

Lecture Hall

Leibniz Institute for Astrophysics Potsdam (AIP)

An der Sternwarte 16 14482 Potsdam, Germany
Oral presentation Main conference Transition Disks & Irregular Structure

Speaker

Antoine Riols (IPAG Grenoble)

Description

Rings and gaps have been observed in a wide range of proto-planetary discs, from young systems like HLTau to older discs like TW Hydra. Recent disc simulations have shown that magnetohydrodynamic (MHD) turbulence (in both the ideal or non-ideal regime) can lead to the formation of rings and be an alternative to the embedded planets scenario. In this talk, I will investigate the way in which these ring form in this context and seek a generic formation process, taking into account the various dissipative regimes and magnetisations probed by the past simulations. I will show that a linear instability, driven by MHD winds, might occur and spontaneously form these rings/gaps structures. Given its robustness, the process identified could have important implications for a wide range of accreting systems threaded by large-scale magnetic fields. To make connection with observations, I will finally analyze the dust distribution around rings/gaps structures and characterize its emission.

Primary author

Antoine Riols (IPAG Grenoble)

Co-author

Geoffroy Lesur (Institute of planetology and astrophysics of Grenoble/CNRS)

Presentation Materials

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