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SUMMARY:Slowly Decaying Waves and Unstable Stars - Joseph Keir (DAMTP / Un
 iversity of Cambridge )
DTSTART:20140509T120000Z
DTEND:20140509T130000Z
UID:TALK52463@talks.cam.ac.uk
CONTACT:Helvi Witek
DESCRIPTION:Recently there has been speculation concerning a link between 
 very slowly decaying waves and non-linear instabilities in GR. We present 
 a class of spacetimes which possess a certain geometric property ("stable 
 trapping")\, on which this very slow decay occurs. An example of this kind
  of spacetime is given by "ultracompact neutron stars"\, and our results s
 uggest that all stars with r < 3M might be unstable. Finally\, we give an 
 outline of the mathematical techniques used to prove that this slow decay 
 occurs.\n
LOCATION:Pavilion B Potter Room (B1.19)
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