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SUMMARY:Quasi-periodic oscillations and the global modes of magnetohydrody
 namic\, relativistic accretion disks  - Janosz Dewberry (DAMTP)
DTSTART:20180501T120000Z
DTEND:20180501T130000Z
UID:TALK98632@talks.cam.ac.uk
CONTACT:Dr William Béthune
DESCRIPTION:The high-frequency quasi-periodic oscillations (HFQPOs) that p
 unctuate the light curves of X-ray binary systems present a window onto th
 e intrinsic properties of stellar-mass black holes and hence a testbed for
  general relativity. One explanation for these features is that relativist
 ic distortion of the accretion disc's differential rotation creates a trap
 ping region in which inertial waves (r-modes) might grow to observable amp
 litudes. In this talk\, I will address previous local analyses predicting 
 that this trapping region may be destroyed by large scale magnetic fields\
 , presenting global calculations of r-modes in a magnetohydrodynamic model
  of a relativistic accretion flow. 
LOCATION:MR14\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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