A population of stellar mass black hole binaries may exist in globular clusters. The dynamics of globular cluster evolution imply that there may be at most one black hole binary in a globular cluster. The populations of binaries are expected to have orbital periods greater than a few hours and a thermal distribution of eccentricities. In the LISA band, the gravitational wave signal from these binaries will consist of several of the higher harmonics of the orbital frequency. A Monte Carlo simulation of the galactic globular cluster system indicates that LISA will detect binaries in 10% of the clusters with an angular resolution sufficient to identify the host cluster of the binary.
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Matthew Benacquista (2002) studied this question.
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