The search for gravitational wave bursts in data from the second LIGO science run
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2005.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2006
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| Online Access: | http://hdl.handle.net/1721.1/34388 |
| _version_ | 1811080169461383168 |
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| author | Chatterji, Shourov Keith |
| author2 | Erotokritos Katsavounidis. |
| author_facet | Erotokritos Katsavounidis. Chatterji, Shourov Keith |
| author_sort | Chatterji, Shourov Keith |
| collection | MIT |
| description | Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2005. |
| first_indexed | 2024-09-23T11:26:57Z |
| format | Thesis |
| id | mit-1721.1/34388 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T11:26:57Z |
| publishDate | 2006 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/343882019-04-10T09:18:01Z The search for gravitational wave bursts in data from the second LIGO science run Chatterji, Shourov Keith Erotokritos Katsavounidis. Massachusetts Institute of Technology. Dept. of Physics. Massachusetts Institute of Technology. Dept. of Physics. Physics. Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2005. Includes bibliographical references (p. 279-293). The network of detectors comprising the Laser Interferometer Gravitational-wave Observatory (LIGO) are among a new generation of detectors that seek to make the first direct observation of gravitational waves. While providing strong support for the General Theory of Relativity, such observations will also permit new tests of physical theory in regions of strong space-time curvature and high matter-energy density. However, the observed signals are expected to occur near the limit of detector sensitivity. The problem of identifying such small signals is the primary focus of this work. This work presents a novel method for the identification of astrophysically unmodeled bursts of gravitational radiation in data from networks of interferometric detectors. The method is based on the Q transform, a multiresolution time-frequency transform that efficiently targets waveforms within a finite region of time, frequency, and Q space. The method is also based on a modification of linear prediction that greatly simplifies the resulting statistical analysis by whitening interferometric detector data prior to Q transform analysis. Together, these techniques form the basis of a complete analysis pipeline that is equivalent to a template-based matched filter search for minimum uncertainty waveforms in the whitened data stream. This method is then applied to search for gravitational-wave bursts with duration less than 1 second and frequency content between 64 and 1024 Hz in coincident data from two detectors during second LIGO science run. Although no gravitational-wave bursts are identified, (cont.) upper bounds are reported for the rate of gravitational-wave bursts as a function of signal strength for isotropic and galactic populations of sources with both abstract and astrophysically motivated waveform. The results indicate a maximum of 0.09 events per day at the 90% confidence level for bursts with characteristic strain amplitude in excess of 10-20 to 10-19 strain Hz-l/2 depending on waveform. A comparison with previous searches demonstrates that this search is one of the most sensitive to date for gravitational-wave bursts of unknown waveform, and is inconsistent with recent indications for an statistical excess of events by the ROG collaboration at above the 99% confidence level. by Shourov Keith Chatterji. Ph.D. 2006-11-07T11:54:35Z 2006-11-07T11:54:35Z 2005 2005 Thesis http://hdl.handle.net/1721.1/34388 70144896 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 293 p. 16308039 bytes 16358709 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Physics. Chatterji, Shourov Keith The search for gravitational wave bursts in data from the second LIGO science run |
| title | The search for gravitational wave bursts in data from the second LIGO science run |
| title_full | The search for gravitational wave bursts in data from the second LIGO science run |
| title_fullStr | The search for gravitational wave bursts in data from the second LIGO science run |
| title_full_unstemmed | The search for gravitational wave bursts in data from the second LIGO science run |
| title_short | The search for gravitational wave bursts in data from the second LIGO science run |
| title_sort | search for gravitational wave bursts in data from the second ligo science run |
| topic | Physics. |
| url | http://hdl.handle.net/1721.1/34388 |
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