Description
As we move into the next generation of gravitational-wave detectors in space (LISA) and on the ground (ET), it becomes relevant to consider environmental effects on the gravitational waveforms from binary black hole coalescences. These include the possible effects of gas as well as the gravitational perturbations from a third object outside the binary. I will review and give formulae for several such effects. Primarily, I will invite discussion of whether altered waveforms will be distinguishable from the waveforms produced by standard isolated binaries with modified parameters.
