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Rainer Weiss and Peter Fritschel. Adhikari, Rana, 1974- Massachusetts Institute of Technology. Dept. of Physics. Massachusetts Institute of Technology. Department of Physics 2006-11-16T11:12:26Z 2006-11-16T11:12:26Z 2004 2004 http://hdl.handle.net/1721.1/28646 58964895 Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2004. This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. Includes bibliographical references (leaves 203-215). Around the world, efforts are underway to commission several kilometer-scale laser interferometers to detect gravitational radiation. In the United States, there are two collocated interferometers in Hanford, Washington and one interferometer in Livingston, Louisiana. Together, these three interferometers form the Laser Interferometric Gravitational-wave Observatory (LIGO). The core of the work described in this thesis is the modeling and reduction of the noise in the interferometers which limits their ultimate sensitivity. A vital component of the noise reduction is the modeling, design, and implementation of [approximately]100 feedback control systems. The most critical of these systems are described and motivated. Although improvements are continuously being made to the stability and noise character of these detectors, several months of data have been collected. Various efforts are underway to search through these data for gravitational wave signals. Included here, is a description of a search made through the data for signals from the ringdown of the quasi-normal modes of Kerr black holes. In addition, several possible future improvements to the detectors are outlined. by Rana Adhikari. Ph.D. 215 leaves 6603680 bytes 6807363 bytes application/pdf application/pdf eng Massachusetts Institute of Technology 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 Physics. Sensitivity and noise analysis of 4 km laser interferometric gravitational wave antennae Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="f92638be-06c2-46a5-9fbf-d6a4c24f7f89"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Sensitivity and noise analysis of 4 km laser interferometric gravitational wave antennae</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2004</PublicationDate> <Authors> <Author> <DisplayName>Adhikari, Rana, 1974-</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Physics.</Keyword> <Abstract>Around the world, efforts are underway to commission several kilometer-scale laser interferometers to detect gravitational radiation. In the United States, there are two collocated interferometers in Hanford, Washington and one interferometer in Livingston, Louisiana. Together, these three interferometers form the Laser Interferometric Gravitational-wave Observatory (LIGO). The core of the work described in this thesis is the modeling and reduction of the noise in the interferometers which limits their ultimate sensitivity. A vital component of the noise reduction is the modeling, design, and implementation of [approximately]100 feedback control systems. The most critical of these systems are described and motivated. Although improvements are continuously being made to the stability and noise character of these detectors, several months of data have been collected. Various efforts are underway to search through these data for gravitational wave signals. Included here, is a description of a search made through the data for signals from the ringdown of the quasi-normal modes of Kerr black holes. In addition, several possible future improvements to the detectors are outlined.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>