Thesis
LIGO detector characterization through higher order statistics, and the development of the bicoherence tool for the LSC
Washington State University
Master of Science (MS), Washington State University
05/2019
DOI:
https://doi.org/10.7273/000004225
Handle:
https://hdl.handle.net/2376/124854
Abstract
We discuss here the characterization of LIGO data through the use of higher order statistics, specifically the bispectrum and the bicoherence. These studies represent a new type of analysis of data from the interferometers, in that existing tools are generally limited to the realm of second order statistics. To this end, we have developed and tested a software tool capable of carrying out such experiments. Because the tool began development and reached a working version by September of 2015, it was available to be used in the study of data around what turned out to be the first direct detection of gravitational waves. Certain interesting features were noted around this time, and were analyzed and brought to the attention of the LIGO Scientific Collaboration Detector Characterization team, serving as part of the lengthy vetting process that took place prior to the final public announcement of the detection. Following this, the tool was again employed in analysis of data from subsequent detections, most notably from the first detection of gravitational waves from inspiraling binary neutron stars on August 17, 2017. Following this initial use and employment, the tool continued to be used as a third-order follow-up for other existing second-order routines. The use of machine learning in tandem with human-based classification for the study of recurrent features in the bispectrum and bicoherence has been considered, and we discuss here the beginnings of such a database.
Metrics
4 File views/ downloads
18 Record Views
Details
- Title
- LIGO detector characterization through higher order statistics, and the development of the bicoherence tool for the LSC
- Creators
- Bernard Richard Hall
- Contributors
- Sukanta Bose (Advisor) - Washington State University, Physics and Astronomy, Department of
- Awarding Institution
- Washington State University
- Academic Unit
- Physics and Astronomy, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Identifiers
- 99900896431201842
- Language
- English
- Resource Type
- Thesis