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SUMMARY:The XRB analogy to the first AGN QPO - Matt Middleton\, University
  of Durham
DTSTART:20090916T133000Z
DTEND:20090916T134500Z
UID:TALK19873@talks.cam.ac.uk
CONTACT:Alexander Blustin
DESCRIPTION:The discovery of the first confirmed QPO in an AGN (REJ1034+39
 6) is the missing link in the timing properties of X-ray Binaries (XRBs) a
 nd AGN and provides a slow-motion look at the much shorter timescale varia
 bility seen in XRBs. By testing the shape of the rapid variability against
  potential spectral models we can deduce that the QPO has it's orgins in t
 he low-temperature comptonisation of the seed disc photons. This model fit
 s the energy spectrum extremely well and naturally reproduces the large so
 ft-excess seen in the source. The optical-X-ray SED of REJ1034+396 togethe
 r with a low mass estimate suggests that the source is accreting at super-
 Eddington rates\, from which we speculate that the QPO is the analogy of t
 he 67Hz QPO of GRS1915+105\, seen in a super-Eddington mass accretion rate
  state. 
LOCATION:Sackler Lecture Theatre\, IoA
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