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

Abbott, B., Abbott, R., Adhikari, R., Jones, D.I. and LIGO Scientific Collaboration, None , LIGO Scientific Collaboration (2005) Search for gravitational waves from primordial black hole binary coalescences in the galactic halo. Physical Review D, 72 (8), 082002-[8pp]. (doi:10.1103/PhysRevD.72.082002).

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[sun]. 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[sun], 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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