MR. BHOOSHAN GADRE

Gravitational waves (GWs) were directly detected recently. The detected signal was generated by the coalescence of a stellar mass binary black holes (GW150914) which is a short (sub-second) duration GW transient signal (SDGWT). The currently used optimal method of matched filtering for detection of such GWs from compact binary coalescence (CBC) is computationally very expensive. We demonstrate that a Cross-Correlation (CC) search for such short duration GW transients can be very efficient in identifying data segments that are likely to embed a signal, thus reducing the total computation cost by a factor of few. It shows promising results for slightly high SNR events. Also it can be used to search for unmodelled SDGWT signals. Work is also being done on development of hierarchical search pipeline for detection of GWs from CBCs. Previously single detector hierarchical method is shown to speed-up the detection by factor of few. We are working on coincident, multi-detector hierarchy including aligned spin parameters which were not considered previously. The preliminary results will also be discussed.