SÉMINAIRE DU GRECO
"Gravitational-wave data analysis using binary black-hole waveforms" |
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P. Ajith |
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While the inspiral and ring-down stages of the binary black-hole coalescence are well-modelled by analytical approximation methods in general relativity, the recent progress in numerical relativity has enabled us to compute accurate waveforms from the merger stage also. This has an important impact on the search for gravitational waves from binary black holes. `Complete'' binary black-hole waveforms can now be produced by matching post-Newtonian waveforms with those computed by numerical relativity, which can be parametrised to produce analytical waveform templates. This enables us to coherently search for all three stages of the coalescence of non-spinning binary black holes using a single template bank. The ''coherent search'' has a number of advantages, such as improved sensitivity and parameter estimation, potential reduction of false alarm-rate etc. This talk summarises some recent efforts in this direction. |
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jeudi 5 juin 2008 - 11:00 Salle des séminaires Évry Schatzman, Institut d'Astrophysique de Paris |
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