
Physics 2007
Gravitationalwave data analysis using binary blackhole waveformsDOI: 10.1088/02649381/25/11/114033 Abstract: Coalescing binary blackhole systems are among the most promising sources of gravitational waves for groundbased interferometers. While the \emph{inspiral} and \emph{ringdown} stages of the binary blackhole coalescence are wellmodelled by analytical approximation methods in general relativity, the recent progress in numerical relativity has enabled us to compute accurate waveforms from the \emph{merger} stage also. This has an important impact on the search for gravitational waves from binary black holes. In particular, while the current gravitationalwave searches look for each stage of the coalescence separately, combining the results from analytical and numerical relativity enables us to \emph{coherently} search for all three stages using a single template family. `Complete' binary blackhole waveforms can now be produced by matching postNewtonian waveforms with those computed by numerical relativity. These waveforms can be parametrised to produce analytical waveform templates. The `complete' waveforms can also be used to estimate the efficiency of different search methods aiming to detect signals from blackhole coalescences. This paper summarises some recent efforts in this direction.
