2 Gravitational Wave Observables

To benefit from gravitational wave observations we must first understand what are the attributes of gravitational waves that we can observe. This section is devoted to a short discussion of the nature of gravitational radiation.

 2.1 Gravitational field vs gravitational waves
 2.2 Gravitational wave polarizations
 2.3 Direction to a source
 2.4 Amplitude of gravitational waves – the quadrupole approximation
  2.4.1 Wave amplitudes and polarization in TT-gauge
  2.4.2 Simple estimates
 2.5 Frequency of gravitational waves
 2.6 Luminosity in gravitational waves

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