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Computational cost for detecting inspiraling binaries using a network of laser interferometric detectors

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Bose,  Sukanta
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Citation

Pai, A., Bose, S., & Dhurandhar, S. (2002). Computational cost for detecting inspiraling binaries using a network of laser interferometric detectors. Classical and Quantum Gravity, 19(7), 1477-1483.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-5449-C
Abstract
We extend a coherent network data-analysis strategy developed earlier for detecting Newtonian waveforms to the case of post-Newtonian (PN) waveforms. Since the PN waveform depends on the individual masses of the inspiralling binary, the parameter-space dimension increases by one from that of the Newtonian case. We obtain the number of templates and estimate the computational costs for PN waveforms: for a lower mass limit of I M,,, for LIGO-I noise and with 3% maximum mismatch, the online computational speed requirement for single detector is a few Gflops; for a two-detector network it is hundreds of Gflops and for a three-detector network it is tens of Tflops. Apart from idealistic networks, we obtain results for realistic networks comprising of LIGO and VIRGO. Finally, we compare costs incurred in a coincidence detection strategy with those incurred in the coherent strategy detailed above