FINDCHIRP: an Algorithm for Detection of Gravitational Waves from Inspiraling Compact Binaries
PHYSICAL REVIEW D 85, 122006 (2012) FINDCHIRP: An algorithm for detection of gravitational waves from inspiraling compact binaries Bruce Allen,1,2 Warren G. Anderson,1 Patrick R. Brady,1 Duncan A. Brown,1,3,4,5 and Jolien D. E. Creighton1 1Department of Physics, University of Wisconsin–Milwaukee, P.O. Box 413, Milwaukee, Wisconsin 53201, USA 2Max-Planck-Institut fu¨r Gravitationsphysik (Albert-Einstein-Institut), Callinstraße 38, D-30167 Hannover, Germany 3Theoretical Astrophysics 130-33, California Institute of Technology, Pasadena, California 91125, USA 4LIGO Laboratory, California Institute of Technology, Pasadena, California 91125, USA 5Department of Physics, Syracuse University, Syracuse, New York 13244, USA (Received 4 August 2011; published 19 June 2012) Matched-filter searches for gravitational waves from coalescing compact binaries by the LIGO Scientific Collaboration use the FINDCHIRP algorithm: an implementation of the optimal filter with innovations to account for unknown signal parameters and to improve performance on detector data that has nonstationary and non-Gaussian artifacts. We provide details on the FINDCHIRP algorithm as used in the search for subsolar mass binaries, binary neutron stars, neutron starblack hole binaries, and binary black holes. DOI: 10.1103/PhysRevD.85.122006 PACS numbers: 06.20.Dk, 04.80.Nn The FINDCHIRP algorithm is the implementation of I. INTRODUCTION matched filtering used by the LIGO Scientific For the detection of a known signal it is well-known that, Collaboration (LSC) and Virgo’s offline searches for gravi- in the presence of stationary and Gaussian noise, the use of tational waves from low-mass (2M <M¼ m1 þ m2 < a matched filter is the optimal detection strategy [1].
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