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LISA sources in Milky Way globular clusters

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arxiv 1802.05661 v5 pith:VGBCKYWA submitted 2018-02-15 astro-ph.HE astro-ph.GA

LISA sources in Milky Way globular clusters

classification astro-ph.HE astro-ph.GA
keywords detectablesourcesbinarieslisabh-bhclusterscontainglobular
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We explore the formation of double-compact-object binaries in Milky Way (MW) globular clusters (GCs) that may be detectable by the Laser Interferometer Space Antenna (LISA). We use a set of 137 fully evolved GC models that, overall, effectively match the properties of the observed GCs in the MW. We estimate that, in total, the MW GCs contain $\sim21$ sources that will be detectable by LISA. These detectable sources contain all combinations of black hole (BH), neutron star, and white dwarf components. We predict $\sim7$ of these sources will be BH-BH binaries. Furthermore, we show that some of these BH-BH binaries can have signal-to-noise ratios large enough to be detectable at the distance of the Andromeda galaxy or even the Virgo cluster.

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Cited by 1 Pith paper

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  1. Waveform Modelling for the Laser Interferometer Space Antenna

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    A review of existing waveform models for LISA sources and the challenges that must still be overcome.