On-line power spectra identification and whitening for the noise in interferometric gravitational wave detectors
نویسندگان
چکیده
منابع مشابه
On line power spectra identification and whitening for the noise in interferometric gravitational wave detectors
The knowledge of the noise Power Spectral Density of interferometric detector of gravitational waves is fundamental for detection algorithms and for the analysis of the data. In this paper we address both to the problem of identifying the noise Power Spectral Density of interferometric detectors by parametric techniques and to the problem of the whitening procedure of the sequence of data. We w...
متن کاملHuman gravity-gradient noise in interferometric gravitational-wave detectors
Among all forms of routine human activity, the one which produces the strongest gravity-gradient noise in interferometric gravitational-wave detectors ~e.g. LIGO! is the beginning and end of weight transfer from one foot to the other during walking. The beginning and end of weight transfer entail sharp changes ~time scale t;20 msec! in the horizontal jerk ~first time derivative of acceleration!...
متن کاملSeismic gravity-gradient noise in interferometric gravitational-wave detectors
When ambient seismic waves pass near and under an interferometric gravitational-wave detector, they induce density perturbations in the Earth, which in turn produce fluctuating gravitational forces on the interferometer’s test masses. These forces mimic a stochastic background of gravitational waves and thus constitute a noise source. This seismic gravity-gradient noise has been estimated and d...
متن کاملHigh power, low-noise, and multiply resonant photodetector for interferometric gravitational wave detectors.
We have developed a new photodetector circuit for use in interferometric gravitational wave detectors. The circuit can detect high laser power with low noise and provide multiple outputs for different signal frequencies. The dynamic range of this circuit is increased in comparison with the photodetector design used until the end of 2005.
متن کاملReduction of optimum light power with Heisenberg-limited photon-counting noise in interferometric gravitational-wave detectors
We study how the behavior of quantum noise, presenting the fundamental limit on the sensitivity of interferometric gravitational-wave detectors, depends on properties of input states of light. We analyze the situation with specially prepared nonclassical input states which reduce the photoncounting noise to the Heisenberg limit. This results in a great reduction of the optimum light power neede...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2001
ISSN: 0264-9381,1361-6382
DOI: 10.1088/0264-9381/18/9/309