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http://dx.doi.org/10.5303/PKAS.2007.22.2.043

ANALYSIS OF GRAVITATIONAL WAVE EXPERIMENTAL DATA WITH DISTRIBUTED COMPUTING  

Lim, Soo-Il (School of Physics and Astronomy, Seoul National University)
Lee, Hyung-Mok (School of Physics and Astronomy, Seoul National University)
Kim, Jin-Ho (School of Physics and Astronomy, Seoul National University)
Oh, Sang-Hoon (School of Physics and Astronomy, Seoul National University)
Lee, Sang-Min (Korea Institute of Science and Technology Information)
Publication Information
Publications of The Korean Astronomical Society / v.22, no.2, 2007 , pp. 43-54 More about this Journal
Abstract
Many gravitational wave detectors are now being built or under operation throughout the world. In particular, LIGO has taken scientific data several times, although current sensitivity is not sufficient to detect the weak signals routinely. However, the sensitivities have been improving steadily over past years so that the real detection will take place in the near future. Data analysis is another important area in detecting the gravitational wave signal. We have carried out the basic research in order to implement data analysis software in Korea@home environment. We first studied the LIGO Science Collaboration Algorithm Library(LAL) software package, and extracted the module that can generate the virtual data of gravitational wave detector. Since burst sources such as merging binaries of neutron stars and black holes are likely to be detected first, we have concentrated on the simulation of such signals. This module can generate pure gravitational wave forms, noise suitable for LIGO, and combination of the signal and noise. In order to detect the gravitational signal embedded in the noisy data, we have written a simple program that employs 'matched filtering' method which is very effective in detecting the signal with known waveform. We found that this method works extremely well.
Keywords
gravitational wave; matched filtering;
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  • Reference
1 Peters, P. C., 1964, Gravitational Radiation and the Motion of Two Point Masses, Phys. Rev., 136, B1224   DOI
2 Will, C. M., & Wiseman, A. G., 1996, Gravitational radiation from compact binary systems: Gravitational waveforms and energy loss to second post-Newtonian order, Phys. Rev. D. 54, 4813   DOI   ScienceOn
3 Abbott, B. et al, 2004a, Analysis of LIGO data for gravitational waves from binary neutron stars, Phys. Rev. D., 69, 122001 (gr-qc/0308069)   DOI
4 Lee, H. M., 1995, Evolution of galactic nuclei with 10-M black holes, Mon. Not. Roy. Ast. Soc., 272, 605
5 Anderson, W. G., Brady, P. R., Creighton, D. E., & Flanagan, E. E., 2001, Phys. Rev. D. 63, 042003   DOI   ScienceOn
6 Abbott, B. et al., 2004b, First upper limits from LIGO on gravitational wave bursts, Phys. Rev. D., 102001 (gr-qc/0312056)   DOI
7 Heggie, D. C., 1975, Binary evolution in stellar dynamics, Mon. Not. Roy. Ast. Soc., 173, 729   DOI