Search for Gravitational Waves from Binary Black Hole Inspiral, Merger   and Ringdown in LIGO-Virgo Data from 2009-2010
  We report a search for gravitational waves from the inspiral, merger and ringdown of binary black holes (BBH) with total mass between 25 and 100 solar masses, in data taken at the LIGO and Virgo observatories between July 7, 2009 and October 20, 2010. The maximum sensitive distance of the detectors over this period for a (20,20) Msun coalescence was 300 Mpc. No gravitational wave signals were found. We thus report upper limits on the astrophysical coalescence rates of BBH as a function of the component masses for non-spinning components, and also evaluate the dependence of the search sensitivity on component spins aligned with the orbital angular momentum. We find an upper limit at 90% confidence on the coalescence rate of BBH with non-spinning components of mass between 19 and 28 Msun of 3.3 \times 10^-7 mergers /Mpc^3 /yr. 
The LIGO Scientific Collaboration and the Virgo Collaboration: J.   Aasi, J. Abadie, B. P. Abbott, R. Abbott, T. D. Abbott, ...
gr-qc astro-ph.CO astro-ph.HE