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Improving the sensitivity of a search for coalescing binary black holes with nonprecessing spins in gravitational wave data

Privitera, Stephen and Mohapatra, Satyanarayan R. P. and Ajith, Parameswaran and Cannon, Kipp and Fotopoulos, Nickolas and Frei, Melissa A. and Hanna, Chad and Weinstein, Alan J. and Whelan, John T. (2014) Improving the sensitivity of a search for coalescing binary black holes with nonprecessing spins in gravitational wave data. Physical Review D, 89 (2). Art. No. 024003. ISSN 2470-0010.

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We demonstrate for the first time a search pipeline with improved sensitivity to gravitational waves from coalescing binary black holes with spins aligned to the orbital angular momentum by the inclusion of spin effects in the search templates. We study the pipeline recovery of simulated gravitational wave signals from aligned-spin binary black holes added to real detector noise, comparing the pipeline performance with aligned-spin filter templates to the same pipeline with nonspinning filter templates. Our results exploit a three-parameter phenomenological waveform family that models the full inspiral-merger-ringdown coalescence and treats the effect of aligned spins with a single effective spin parameter χ. We construct template banks from these waveforms by a stochastic placement method and use these banks as filters in the recently developed gstlal search pipeline. We measure the observable volume of the analysis pipeline for binary black hole signals with M_(total) and χ∈[0,0.85]. We find an increase in observable volume of up to 45% for systems with 0.2≤χ≤0.85 with almost no loss of sensitivity to signals with 0≤χ≤0.2. We also show that the use of spinning templates in the search pipeline provides for more accurate recovery of the binary mass parameters as well as an estimate of the effective spin parameter. We demonstrate this analysis on 25.9 days of data obtained from the Hanford and Livingston detectors in LIGO’s fifth observation run.

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Ajith, Parameswaran0000-0001-7519-2439
Weinstein, Alan J.0000-0002-0928-6784
Additional Information:© 2014 American Physical Society. Received 23 October 2013; published 8 January 2014. The authors gratefully acknowledge the support of the United States National Science Foundation for the construction and operation of the LIGO Laboratory. This work was supported by NSF Grants No. PHY-0855494 and No. PHY-1207010. P. A.’s research was partially supported by a FastTrack fellowship and a Ramanujan Fellowship from the Department of Science and Technology, India, and by the EADS Foundation through a chair position on “Mathematics of Complex Systems” at ICTS-TIFR. The authors would like to thank those individuals in the gstlal group who wrote the programs used to perform the spinning analyses and Thomas Dent for useful comments on the manuscript. S. R. P. M. would like to thank Prayush Kumar for useful discussion. S. P. would like to thank Deborah Hamm for useful discussion.
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FastTrack fellowshipUNSPECIFIED
Department of Science and Technology (India) Ramanujan FellowshipUNSPECIFIED
Issue or Number:2
Classification Code:PACS: 04.30.-w
Record Number:CaltechAUTHORS:20140402-141303645
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Official Citation: Improving the sensitivity of a search for coalescing binary black holes with nonprecessing spins in gravitational wave data Stephen Privitera, Satyanarayan R. P. Mohapatra, Parameswaran Ajith, Kipp Cannon, Nickolas Fotopoulos, Melissa A. Frei, Chad Hanna, Alan J. Weinstein, and John T. Whelan Phys. Rev. D 89, 024003 (2014) – Published 8 January 2014
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44611
Deposited By: Ruth Sustaita
Deposited On:02 Apr 2014 21:53
Last Modified:09 Mar 2020 13:18

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