Comparing Gravitational Waves & Post-Newtonian Approximation

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SUMMARY

The discussion centers on the comparison between post-Newtonian (PN) approximations of gravitational waves and the actual detections of these waves. Participants reference the PPN (Parametrized Post-Newtonian) approximation as a framework within General Relativity for predicting gravitational wave behavior. Key insights include the effectiveness of PPN in stable orbits versus its limitations during orbital decay, as noted in the seminal text "Gravitation" by Misner, Thorne, and Wheeler. The need for further literature on this topic is emphasized, indicating a gap in accessible resources.

PREREQUISITES
  • Understanding of General Relativity
  • Familiarity with gravitational wave physics
  • Knowledge of the Parametrized Post-Newtonian (PPN) formalism
  • Basic concepts of orbital mechanics
NEXT STEPS
  • Research the PPN approximation in gravitational wave contexts
  • Study the implications of orbital decay on gravitational wave predictions
  • Read "Gravitation" by Misner, Thorne, and Wheeler for foundational concepts
  • Explore recent gravitational wave detection studies and their alignment with PN predictions
USEFUL FOR

Physicists, astrophysicists, and researchers interested in gravitational wave phenomena and the theoretical frameworks predicting their behavior.

Vrbic
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Hello,
I would like to ask, if somebody knows anything about comparison post-Newtonian approximation of gravitational waves and these which were detected. Or generally post-Newtonian predictions vs. facts found in detection. I tried find some article but I didn't find. Please let me know what you know or refer me, please.

Thank you everyone.
 
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Post-Newtonian means ? As far as I know it means General Relativity, which is the theory behind gravitational waves.
 
Vrbic said:
Hello,
I would like to ask, if somebody knows anything about comparison post-Newtonian approximation of gravitational waves and these which were detected. Or generally post-Newtonian predictions vs. facts found in detection. I tried find some article but I didn't find. Please let me know what you know or refer me, please.

Thank you everyone.

I think there's some discussion of the PPN approximation for gravitational waves in Misner, Thorne, Wheeler, "Gravitation". I think I recall some fine points about PPN and insprials, something about PPN being good enough if the orbit didn't decay, but not quite good enough when it did. I don't have time to look it up at the moment though.
 

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