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adrian_m
- 38
- 1
The Hulse-Taylor (PSR B1913+16) binary pulsar 'observed vs. predicted' orbit decay is one of the great validations of GR. The orbit decay over the recording period of 30+ years is very close to GR prediction as per predicted energy loss through gravitational waves.
Hulse-Taylor experiment is seen as a confirmation of the existence of gravitational waves, though none have yet been directly detected (LIGO has failed to do so, but the sensitivity of Advanced LIGO in 2014 may succeed, if the underlying theory and computations are correct. We're still waiting on that).
However, what would have happened if the two pulsars involved happened to have a 'slightly higher' orbital velocity around their CG than they do (as possibly may be the case for some other binary pulsars)? Would they have then maintained their existing orbits without decay or slowly spiraled outwards, and been seen as a refutation of the existence of gravitational waves? Have any other binary pulsar experiments confirmed or refuted this? Or is such a situation impossible?
[Bit of a naive question as I have very little understanding of the GR area that deals with gravitational waves, but hoping to get some inputs through this question.]
Hulse-Taylor experiment is seen as a confirmation of the existence of gravitational waves, though none have yet been directly detected (LIGO has failed to do so, but the sensitivity of Advanced LIGO in 2014 may succeed, if the underlying theory and computations are correct. We're still waiting on that).
However, what would have happened if the two pulsars involved happened to have a 'slightly higher' orbital velocity around their CG than they do (as possibly may be the case for some other binary pulsars)? Would they have then maintained their existing orbits without decay or slowly spiraled outwards, and been seen as a refutation of the existence of gravitational waves? Have any other binary pulsar experiments confirmed or refuted this? Or is such a situation impossible?
[Bit of a naive question as I have very little understanding of the GR area that deals with gravitational waves, but hoping to get some inputs through this question.]