Abstract Details
| Name: Haris M. K Affiliation: IISER TVM Conference ID: ASI2015_809 Title : Aperture Synthesis in GW inspiral search Authors and Co-Authors : Archana Pai Abstract Type : Poster Abstract Category : General Relativity and Cosmology Abstract : Gravitational Wave inspiral search with a global network of interferometers when carried in a phase coherent fashion mimics a search with two effective synthetic data streams. The two synthetic data streams pertaining to the two polarizations of Gravitational Wave can be derived as a linear combination of over-whitened data from individual detectors prior to the Maximum-Likelihood analysis in a most natural way using the technique of singular-value-decomposition (SVD) applied to the network signal-to-noise ratio vector. The network Log Likelihood Ratio(LLR) is then the sum of the LLRs of these synthetic streams. The four extrinsic parameters of the non-spinning inspiral signal namely amplitude, initial phase, binary inclination and the polarization are mapped to two amplitudes and two phases. The maximization of LLR over the new extrinsic parameters is a straightforward exercise closely linked to the single detector approach in the literature. |