Search for gravitational waves from primordial black hole binary coalescences in the galactic halo

Abbott, B. and Cantley, C.A., LIGO Scientific Collaboration (2005) Search for gravitational waves from primordial black hole binary coalescences in the galactic halo. Physical Review D, 72 (8). 082002. ISSN 1550-2368 (https://doi.org/10.1103/PhysRevD.72.082002)

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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 binary coalescence with component masses in the range 0.2–1.0M⊙. 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 nonspinning black holes with masses in the range 0.2–1.0M⊙, we place an observational upper limit on the rate of primordial black hole coalescence of 63 per year per Milky Way halo (MWH) with 90% confidence.

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