Bayesian reconstruction of gravitational wave burst signals from simulations of rotating stellar core collapse and bounce

Röver, C., Bizouard, M.-A., Christensen, N., Dimmelmeier, H., Heng, I.S. and Meyer, R. (2009) Bayesian reconstruction of gravitational wave burst signals from simulations of rotating stellar core collapse and bounce. Physical Review D, 80(10), (doi: 10.1103/PhysRevD.80.102004)

Abstract

Presented in this paper is a technique that we propose for extracting the physical parameters of a rotating stellar core collapse from the observation of the associated gravitational wave signal from the collapse and core bounce. Data from interferometric gravitational wave detectors can be used to provide information on the mass of the progenitor model, precollapse rotation, and the nuclear equation of state. We use waveform libraries provided by the latest numerical simulations of rotating stellar core collapse models in general relativity, and from them create an orthogonal set of eigenvectors using principal component analysis. Bayesian inference techniques are then used to reconstruct the associated gravitational wave signal that is assumed to be detected by an interferometric detector. Posterior probability distribution functions are derived for the amplitudes of the principal component analysis eigenvectors, and the pulse arrival time. We show how the reconstructed signal and the principal component analysis eigenvector amplitude estimates may provide information on the physical parameters associated with the core collapse event.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Heng, Professor Ik Siong
• Authors: Röver, C., Bizouard, M.-A., Christensen, N., Dimmelmeier, H., Heng, I.S., and Meyer, R.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Research Centre: College of Science and Engineering > School of Physics and Astronomy > Institute for Gravitational Research
• Journal Name: Physical Review D
• Publisher: American Physical Society
• ISSN: 1550-7998
• ISSN (Online): 1089-4918

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
45931	2	Investigations in Gravitational Radiation.	Sheila Rowan	Science & Technologies Facilities Council (STFC)	ST/I001085/1	Physics and Astronomy