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공공누리This item is licensed Korea Open Government License

Title
Search and Parameter Estimate in Gravitational Wave Data Analysis and the Fisher Matrix
Author(s)
조희석
Publication Year
2015-06-06
Abstract
By means of next-generation ground-based gravitational wave (GW) detectors, real GW signals will be directly detected within a few years. In the data analysis of GWs emitted from merging compact binaries, the matched filtering method is employed in the search pipeline to identify GW events. Once a detection is made in the search, the parameter estimate seeks the physical parameters
of the GW source. This pipeline repeatedly performs overlap computations by generating theoreticalwaveforms and matching those to the detector data based on Monte Carlo simulations. In this work, we briefly review the search and the parameter estimate in GW data analysis. We also introduce the
Fisher matrix method that has been mainly used to predict the errors in the parameter estimates
analytically. The Fisher matrix is very easy to compute and has very low computational cost
compared to Monte Carlo simulations. Using the Fisher matrix, we calculate the parameter estimate
errors for a nonspinning black hole - neutron star binary system. We find that the errors of the
component masses for the advanced LIGO sensitivity can be smaller than those for the initial LIGO
sensitivity by a factor of ~3.
Keyword
Gravitational wave; Data analysis; Parameter estimate; Fisher matrix
Journal Title
Journal of the Korean Physical Society
Citation Volume
66
ISSN
0374-4884
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Appears in Collections:
7. KISTI 연구성과 > 학술지 발표논문
URI
https://repository.kisti.re.kr/handle/10580/14431
http://www.ndsl.kr/ndsl/search/detail/article/articleSearchResultDetail.do?cn=NART76728876
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