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SUMMARY:Magnetic activity in protoplanetary discs - Wardle\, MJ (Macquarie
 )
DTSTART:20090930T080000Z
DTEND:20090930T083000Z
UID:TALK20349@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Magnetic fields play a key role in the dynamics and evolution 
 of protoplanetary disks. Significant magnetic flux is brought in during th
 e collapse of a molecular cloud core to form a star and disk. Subsequently
 \, the maagnetic field may efficiently transport angular momentum radially
  outwards by MHD turbulence or remove it vertically through ordered magnet
 ocentrifugal acceleration of outflows from the disk surface. In addition\,
  magnetically-driven transport and mixing impacts disk chemistry\, the evo
 lution of the grain population\, and planetary migration. \n\nI shall outl
 ine some of the considerable uncertainties in understanding and quantifyin
 g these processes. 
LOCATION:Seminar Room 1\, Newton Institute
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