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SUMMARY:Theoretical Foundation of 3D Alfven Resonances - Thomas Elsden (St
  Andrews)
DTSTART:20170508T150000Z
DTEND:20170508T160000Z
UID:TALK71814@talks.cam.ac.uk
CONTACT:Robert Teed
DESCRIPTION:The coupling of fast and Alfven magnetohydrodynamic (MHD) wave
 s is of fundamental interest in astrophysical plasmas. Under certain condi
 tions\, Alfven waves can be resonantly excited by fast mode waves\, result
 ing in a localised accumulation of energy in the plasma. In the solar comm
 unity this is often referred to as resonant absorption\, while in the magn
 etospheric community it's known as field line resonance. These processes h
 ave applications in coronal heating and in magnetospheric dynamics.\n\n\nA
 lfven resonances are well understood in 1D and 2D\, but not so in 3D. We p
 resent a theoretical way of understanding the structure of Alfven resonanc
 es in 3D\, which is corroborated by numerical simulations.
LOCATION:MR14\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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