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SUMMARY:Stellar perturbation via Lie derivatives.
DTSTART;VALUE=DATE-TIME:20110714T091500Z
DTEND;VALUE=DATE-TIME:20110714T093000Z
DTSTAMP;VALUE=DATE-TIME:20260711T205710Z
UID:indico-contribution-5157@events.saip.org.za
DESCRIPTION:Speakers: Fabio Frescura (U Witwatersrand)\nPerturbation theor
 y uses Lagrangian techniques that require vector fields to be compared at 
 finitely separated points. This method can be generalised to the strong gr
 avitational field regime in one of two ways\, using either covariant or Li
 e derivatives. In this paper\, I argue that those methods based on the Lie
  derivative are more useful. The Lie derivative provides a clear picture o
 f how the deformation of the fluid flow takes place. It also provides a na
 tural way to discuss large perturbations. I apply this method to some elem
 entary stability problems in the study of stellar structure.\n\nhttps://ev
 ents.saip.org.za/event/7/contributions/5157/
LOCATION: Acro2
URL:https://events.saip.org.za/event/7/contributions/5157/
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