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Search for Gravitational Waves from Primordial Black Hole Binary Coalescences in the Galactic Halo

LIGO Scientific Collaboration·B. Abbott
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Abstract

We use data from the second science run of the LIGO gravitational-wave detectors to search for the gravitational waves from primordial black hole (PBH) binary coalescence with component masses in the range 0.2--$1.0 M_\odot$. The analysis requires a signal to be found in the data from both LIGO observatories, according to a set of coincidence criteria. No inspiral signals were found. Assuming a spherical halo with core radius 5 kpc extending to 50 kpc containing non-spinning black holes with masses in the range 0.2--$1.0 M_\odot$, we place an observational upper limit on the rate of PBH coalescence of 63 per year per Milky Way halo (MWH) with 90% confidence.

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LIGO Scientific Collaboration, B. Abbott. 2005-05-10. Search for Gravitational Waves from Primordial Black Hole Binary Coalescences in the Galactic Halo. https://doi.org/10.1103/physrevd.72.082002

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