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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-2737
DTSTART:20121203T180000Z
DURATION:PT1H0M0S
DTSTAMP:20260412T075449Z
LAST-MODIFIED:20121116T205233Z
LOCATION:1310 Sterling Hall
SUMMARY:Gyrokinetic Simulations of Solar Wind Turbulence and Dissipati
 on\, Plasma Physics (Physics/ECE/NE 922) Seminar\, Jason TenBarge\, Un
 iversity of Iowa
DESCRIPTION:Turbulence plays an important role in space and astrophysi
 cal plasmas by mediating the transfer of energy from large-scale motio
 ns to the small scales at which the turbulence can be dissipated. Rece
 nt advances in solar wind data extending to sub-electron scales have i
 ncreased the focus on turbulence and dissipation at kinetic scales. Du
 e to the nature of plasma turbulence\, gyrokinetics is well suited to 
 study weakly collisional kinetic plasmas\, such as the solar wind. We 
 present nonlinear gyrokinetic simulation results in- cluding: (1) ener
 gy spectra spanning the entire dissipation range from ion to sub-elect
 ron scales that show striking agreement with in situ solar wind data\,
  (2) identification of a dissipation range anisotropic cascade of ener
 gy in agreement with predictions of critical balance\, and (3) constra
 ints on the physical origin of energy dissipation at kinetic scales.
URL:https://www.physics.wisc.edu/events/?id=2737
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