Abstract Details
| Name: Shilpa Kastha Affiliation: Institute of Mathematical Sciences Conference ID: ASI2018_1630 Title : Parametrized test of post-Newtonian multipolar structure of compact binary merger Authors and Co-Authors : Shilpa Kastha (Institute of Mathematical Sciences), Anuradha Gupta (Institute of Gravitation and cosmos, Penn State), K G Arun (Chennai Mathematical Institute), B. S. Sathyaprakash (Institute of Gravitation and cosmos, Penn State) Abstract Type : Contributed Talk Abstract Category : General Relativity and Cosmology Abstract : The present-day parameter estimation schemes of gravitational wave events are based on the waveforms predicted by general relativity (GR). Various astrophysical observations so far have also supported GR with extremely good accuracies. Since chirping signal from compact binary carries signatures of gravity in the strong field regime, detection of these signals gives a wide platform to test the fundamental predictions of GR. Here, we propose a parametrized method to test the post-Newtonian (PN) multipolar structure of compact binary mergers predicted by GR in a model independent way through GW observation. We introduce different free parameters to different GR multipole moments appearing in the PN phasing formula to capture the effect of alternative theories generically. We study how well can these parameters be recovered for an injection of pure GR signal for various detector sensitivities such as advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO), Einstein Telescope (ET), Laser Interferometer Space Antenna (LISA) and Cosmic Explorer (CE). |