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Some features of this site may not work without it. Sensitivity and noise analysis of 4 km laser interferometric gravitational wave antennae Download. Massachusetts Institute of Technology.
Rainer Weiss and Peter Fritschel. Around the world, efforts are underway to commission several kilometer-scale laser rana adhikari phd thesis online to detect gravitational radiation.
In the United States, there are two collocated interferometers in Hanford, Washington and one rana adhikari phd thesis online in Livingston, Louisiana. The core of the work rana adhikari phd thesis online in rana adhikari phd thesis online rana adhikari phd thesis online is the modeling and reduction of the noise in the interferometers which limits their ultimate sensitivity.
A vital component go here the noise reduction is the modeling, design, and implementation of [approximately] feedback control systems. The most critical of these systems are described and rana adhikari phd thesis online.
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 rana adhikari phd thesis online quasi-normal modes of Kerr black holes. In addition, several possible future improvements to the detectors are outlined.
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Chu, Tony Numerical simulations of black-hole spacetimes. This thesis covers various aspects of the numerical simulation of black-hole spacetimes according to Einstein's general theory of relativity, using the Spectral Einstein Code developed by the Caltech-Cornell-CITA collaboration. The first topic is improvement of binary-black-hole initial data.
Laser interferometer gravitational wave observatory LIGO consists of two complex large-scale laser interferometers designed for direct detection of gravitational waves from distant astrophysical sources in the frequency range 10Hz - 5kHz. Direct detection of space-time ripples will support Einstein's general theory of relativity and provide invaluable information and new insight into physics of the Universe. Initial phase of LIGO started in , and since then data was collected during six science runs.
Late in , gravitational physics reached a watershed moment with the first direct detections of gravitational waves. At present, LIGO comprises two 4 km laser interferometers, one in Washington and the other in Louisiana; a third detector is planned to be installed in India.
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