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SUMMARY:Global simulations of magnetised self-gravitating protoplanetary d
 isks
DTSTART;VALUE=DATE-TIME:20200514T135500Z
DTEND;VALUE=DATE-TIME:20200514T141500Z
DTSTAMP;VALUE=DATE-TIME:20240704T115619Z
UID:indico-contribution-17@meetings.aip.de
DESCRIPTION:Speakers: Lucio Mayer (University of Zurich)\nIn  the early st
 ages of a protoplanetary disk\, when its mass is a significant fraction of
  its star's\, turbulence generated by gravitational instability (GI) shoul
 d feature significantly in the disk's evolution. At the same time\, the di
 sk may be sufficiently ionised for magnetic fields to play some role in th
 e dynamics.\nThough usually neglected\, the impact of magnetism on the GI 
 may be critical\, with consequences for several processes: the efficiency 
 of accretion\, spiral structure formation\, fragmentation\, and the dynami
 cs of solids. In this paper\, \nwe report on the first global three-dimens
 ional magnetohydrodynamical simulations of a self-gravitating protoplaneta
 ry using the meshless finite mass (MFM)\nLagrangian  technique.\nWe confir
 m that GI spiral waves trigger a dynamo that amplifies\nan initial magneti
 c field to nearly thermal amplitudes (plasma $\\beta \n\nhttps://meetings.
 aip.de/event/1/contributions/17/
LOCATION:Leibniz Institute for Astrophysics Potsdam (AIP) Lecture Hall
URL:https://meetings.aip.de/event/1/contributions/17/
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