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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1506
DTSTART:20090414T203000Z
DTEND:20090414T220000Z
DTSTAMP:20260315T014822Z
LAST-MODIFIED:20090413T141644Z
LOCATION:6515 Sterling Hall
SUMMARY:Polarized FIR Emission from T Tauri Disks\, Astronomy Colloqui
 um\, Jungyeon Cho\, UW Astronomy Dept
DESCRIPTION:Recently far infra-red (FIR) polarization of the 850 micro
 n continuum emission from T Tauri disks has been detected. The observe
 d degree of polarization is around 3 % or less. Since thermal emission
  from dust grains dominates the spectral energy distribution at the FI
 R regime\, dust grains might be the cause of the polarization. In the 
 presence of magnetic field\, dust grains<br>
\ncan get aligned by radi
 ative torque and the aligned grains can produce polarized emission in 
 infrared wavelengths. We explore alignment of dust grains by radiative
  torque in T Tauri disks and provide predictions for polarized emissio
 n for disks viewed at different wavelengths and viewing angles. Our st
 udy indicates<br>
\nthat multi-frequency infrared polarimetric studies
  of protostellar disks can provide good insights into the details of t
 heir magnetic structure. We also introduce the result and implications
  of a more recent observation at 350 microns. 
URL:https://www.physics.wisc.edu/events/?id=1506
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