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SUMMARY:Gravitational Instabilities in Protoplanetary Discs: A Vanishing A
 ct - Sahl Rowther\, Warwick
DTSTART:20220301T130000Z
DTEND:20220301T140000Z
UID:TALK169730@talks.cam.ac.uk
CONTACT:Dr Mathias Nowak
DESCRIPTION:In their youth\, protoplanetary discs are expected to be massi
 ve and self-gravitating\, which results in non-axisymmetric spiral structu
 res. However recent observations of young protoplanetary discs with ALMA h
 ave revealed that discs with large-scale spiral structures are rarely obse
 rved in the midplane. Instead\, axisymmetric discs with some also having r
 ing & gap structures are more commonly observed. In the first part of the 
 talk I will present our results of planet-disc interactions in gravitation
 ally unstable (GI) discs. In the second half\, I will show our recent resu
 lts of warped GI discs. Consideration of complex processes such as these h
 as important implications on observations of protoplanetary as it shows ho
 w the evolution of GI discs can be altered\, potentially resolving the dis
 crepancy between theory and observations.
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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