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SUMMARY:The quadrupole formula: a hundred years later  - Béatrice Bonga
DTSTART:20161220T130000Z
DTEND:20161220T140000Z
UID:TALK69673@talks.cam.ac.uk
CONTACT:Christopher Moore
DESCRIPTION:Einstein’s celebrated quadrupole formula lies at the foundat
 ion of the first indirect evidence for gravitational waves: it explains wi
 th high precision the shrinking of the orbital radius of the Hulse-Taylor 
 system. The formula expresses the power radiated in the form of gravitatio
 nal radiation in terms of the source quadrupole moments. However\, the der
 ivation assumes a Minkowski background\, but there is strong observational
  evidence for a positive cosmological constant. To account for this\, the 
 quadrupole formula is generalized by replacing the Minkowski background wi
 th a de Sitter space-time. In this talk\, I will focus on the conceptual s
 ubtleties that arise and comment on physical implications.
LOCATION:Pavilion B Potter Room (B1.19)
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