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SUMMARY:The underexplored frontier of ice giant dynamos (Invited speaker) 
 - Krista Soderlund (University of Texas at Austin)
DTSTART:20220915T101500Z
DTEND:20220915T110000Z
UID:TALK177512@talks.cam.ac.uk
DESCRIPTION:The Voyager 2 flybys of Uranus and Neptune in the 1980's revea
 led the first non-dipole-dominated planetary magnetic fields and highlight
 ed how much we have yet to learn about these putative ice giant planets. I
 n this presentation\, we will summarize observations of Uranus&rsquo\; and
  Neptune&rsquo\;s magnetic fields and place them in context of other plane
 tary and stellar dynamos. Numerous hypotheses have been proposed to explai
 n the multipolar magnetic fields of Uranus and Neptune\, although no model
 s are yet able to fully explain their observed magnetic fields. With new a
 dvances in ice giant internal structure models and material properties at 
 high pressures and temperatures\, we will show preliminary results that in
 vestigate the interplay between electrical conductivity and density strati
 fication to determine under what circumstances ice giant-like dynamos are 
 obtained. With an eye towards both planets and stars\, we will also consid
 er the influence of the bulk magnetic Prandtl number on dynamos that are m
 oderately constrained by rotation. Finally\, we will discuss future direct
 ions necessary to answer outstanding questions about the dynamos of ice gi
 ant planets\, both within our solar system and beyond.
LOCATION:Seminar Room 1\, Newton Institute
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