Abstract Details
| Name: Anuradha Affiliation: IUCAA, Pune Conference ID: ASI2016_884 Title : Towards an effective signal-based discriminator for searches of gravitational-wave signals from binary black hole coalescences Authors and Co-Authors : Anuradha Gupta, Sanjeev Dhurandhar, Sukanta Bose, Reetika Dudi Abstract Type : Poster Abstract Category : General Relativity and Cosmology Abstract : Compact binary coalescences (CBCs) involving spinning black holes and/or neutron stars are the most exciting gravitational wave events for the second-generation laser interferometric detectors like Advanced LIGO and Advanced Virgo. A successful detection of CBC signals significantly depends on how well we discriminate them from the non-stationary and non-Gaussian noise artifacts present in the detector data. The chi-square time-frequency test is one of the most powerful ways to discriminate such noise transients from the genuine CBC signals. Unfortunately, this discriminator, as applied in the traditional way, does not perform very well for CBC signals with high mass and/or spins. We investigate in detail the factors that contribute to the failure of this discriminator in those regions of the parameter space. This helps us to develop a better and robust discriminator for high mass non-spinning and aligned-spin CBC searches. We describe our results for the same. |