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Observing complete gravitational wave signals from dynamical capture binaries

Author(s): East, William E; McWilliams, Sean T; Levin, Janna; Pretorius, Frans

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dc.contributor.authorEast, William E-
dc.contributor.authorMcWilliams, Sean T-
dc.contributor.authorLevin, Janna-
dc.contributor.authorPretorius, Frans-
dc.identifier.citationEast, William E, McWilliams, Sean T, Levin, Janna, Pretorius, Frans. (2013). Observing complete gravitational wave signals from dynamical capture binaries. PHYSICAL REVIEW D, 87 (10.1103/PhysRevD.87.043004en_US
dc.description.abstractWe assess the detectability of the gravitational wave signals from highly eccentric compact binaries. We use a simple model for the inspiral, merger, and ringdown of these systems. The model is based on mapping the binary to an effective single black hole system described by a Kerr metric, thereby including certain relativistic effects such as zoom-whirl-type behavior. The resultant geodesics source quadrupolar radiation and, in turn, are evolved under its dissipative effects. At the light ring, we attach a merger model that was previously developed for quasicircular mergers but also performs well for eccentric mergers with little modification. We apply this model to determine the detectability of these sources for initial, Enhanced, and Advanced laser interferometer gravitational-wave observatory across the parameter space of nonspinning close capture compact binaries. We conclude that, should these systems exist in nature, the vast majority will be missed by conventional burst searches or by quasicircular waveform templates in the advanced detector era. Other methods, such as eccentric templates or, more practically, a stacked excess power search, must be developed to avoid losing these sources. These systems would also have been missed frequently in the initial laser interferometer gravitational-wave observatory data analysis. Thus, previous null coincidence results with detected gamma-ray bursts cannot exclude the possibility of coincident gravitational wave signals from eccentric binaries. DOI: 10.1103/PhysRevD.87.043004en_US
dc.relation.ispartofPHYSICAL REVIEW Den_US
dc.rightsFinal published version. Article is made available in OAR by the publisher's permission or policy.en_US
dc.titleObserving complete gravitational wave signals from dynamical capture binariesen_US
dc.typeJournal Articleen_US

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