Speaker
Description
Many gravitational waves from black hole mergers have been observed, and their science has attracted attention.
We have developed a filter using the Laplace transform to analyze gravitational waves from black hole quasinormal mode oscillations, which are predicted to be properties of spacetime around black holes.
The Laplace transform has an algebraically clear solution for a damped sine wave, therefore we can expect Laplace transform output corresponding to quasinormal modes on the complex frequency plane.
Furthermore, we have investigated the application of the short-time Laplace transform, which processes time-series signals in short segments.
In this talk, we will display the principle mechanism of this method, and present the response to gravitational wave waveforms and evaluation in more realistic situations as gravitational wave signal in noises.
