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

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

2001-10-08

arxiv.org/abs/gr-qc/0110041v1

Class.Quant.Grav. 19 (2002) 1477-1484

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, 2 tables, To appear in a special issue of Class. Quantum Grav., Based on the presentation in 4-th Edoardo Amaldi conf

Scientific paper

10.1088/0264-9381/19/7/333

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 inspiraling 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 a solar mass, 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.

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