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SUMMARY:Direct numerical simulations of internal wave attractors - Boris D
 intrans (Laboratoire Astrophysique de Toulouse)
DTSTART:20100118T160000Z
DTEND:20100118T170000Z
UID:TALK21543@talks.cam.ac.uk
CONTACT:Laurène Jouve
DESCRIPTION:I will present the first simulations of internal wave attracto
 rs done\nwith the Pencil Code. Internal waves are gravity waves that propa
 gate\nonly in stably-stratified regions like the radiative zones of stars.
 \nWhen the pulsating star rotates rapidly (rotation period of the same\nor
 der than the oscillation one)\, a fascinating feature appears as\nthe wave
  energy can be focused along attractors. As a consequence\,\nthe resulting
  oscillation spectrum is a mixture of normal eigenmodes\nand singular ones
  depending on the associated orbit of characteristics\n(i.e. ergodic or fo
 cused). I will review both experiments and numerical\nsimulations of this 
 phenomenon that appears in non-separable geometries.
LOCATION:MR14\, DAMTP\, Pav. F
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