Gravitational Waves Probe the Coalescence Rate of Massive Black Hole Binaries

We calculate the expected nHz-muHz gravitational wave (GW) spectrum from coalescing massive black hole (MBH) binaries resulting from mergers of their host galaxies. We consider detection of this spectrum by precision pulsar timing and a future pulsar timing array. The spectrum depends on the merger rate of massive galaxies, the demographi...更多