MR. BHOOSHAN GADRE

Compact binary coalescences (CBCs) are the most promising sources of Gravitational waves (GWs) for direct detection using ground based interferometric detectors like Advanced LIGO. This is partly because one can use matched filtering (MF) to search for CBC signals, which relies on precise modelling of the phase evolution of these sources. One needs at least about 105 modelled waveforms for low mass ($1 ~to~ 30 ~ M_{\odot}$) binary searches to ensure that signals are not missed. However, the large number of "templates" not only make the search computationally expensive, but also lead to numerous false alarms. Number of false alarms also increases due to non-stationary and non-Gaussianity of noise in the data, which in turn increases computational cost. Here we study the performance of a template-free cross-correlation (CC) search for detection of transient sources like CBC and whether it can be used in online searches to reduce computational cost. We found out that it performs well for high SNR sources. This method could serve as the first stage of a hierarchical search including spin parameters, which is our final goal.