Results 31 to 40 of about 49,182 (198)

Prospects of observing continuous gravitational waves from known pulsars [PDF]

, 2011
Several past searches for gravitational waves from a selection of known pulsars have been performed with data from the science runs of the Laser Inferometer Gravitational-wave Observatory (LIGO) gravitational wave detectors.
Abadie, Abbott, Abbott, Abbott, Abbott, Abbott, Abbott, Abbott, Abbott, Abbott, Abbott, Abbott, Acernese, Akgün, Andersson, Andersson, Ando, Arras, Chugunov, Clark, Cordes, Cutler, Dupuis, Flanagan, Freise, Harry, Haskell, Haskell, Haskell, Hild, Hild, Horowitz, Horowitz, Jaranowski, Jaranowski, Jones, Jones, Jones, Knippel, Knispel, Kurkela, Kuroda, Lattimer, Lattimer, LIGO Scientific Collaboration, Lin, Manchester, Mannarelli, Matthew Pitkin, Ng, Owen, Owen, Owen, Palomba, Pitkin, Prix, Punturo, Santostasi, Seto, Smits, Ushomirsky, Watts, Will, Willke, Xu   +64 more
core   +3 more sources

Gauge-Invariant Perturbation Theory on the Schwarzschild Background Spacetime Part I: Formulation and Odd-Mode Perturbations

Universe
This article is Part I of our series of full papers on a gauge-invariant “linear” perturbation theory on the Schwarzschild background spacetime which was briefly reported in our short papers by the present author in 2021.
Kouji Nakamura
doaj   +1 more source

Gauge-Invariant Perturbation Theory on the Schwarzschild Background Spacetime: Part III—Realization of Exact Solutions

Universe
This is the Part III paper of our series of papers on a gauge-invariant perturbation theory on the Schwarzschild background spacetime. After reviewing our general framework for the gauge-invariant perturbation theory and the proposal for gauge-invariant ...
Kouji Nakamura
doaj   +1 more source

Design and Thermal Stability Analysis of Swing Micro-Mirror Structure for Gravitational Wave Observatory in Space

Machines, 2021
A kind of swing micro-mirror structure with high stability for gravitational wave observatory in space is proposed in this paper. As the key interface instrument in the gravitational wave observatory, the swing micro-mirror structure plays a very ...
Kunyao Zheng, Mingming Xu
doaj   +1 more source

Gauge-Invariant Perturbation Theory on the Schwarzschild Background Spacetime Part II: Even-Mode Perturbations

Universe
This is the Part II paper of our series of papers on a gauge-invariant perturbation theory on the Schwarzschild background spacetime. After reviewing our general framework of the gauge-invariant perturbation theory and the proposal of gauge-invariant ...
Kouji Nakamura
doaj   +1 more source

The Advanced LIGO Photon Calibrators [PDF]

, 2016
The two interferometers of the Laser Interferometry Gravitaional-wave Observatory (LIGO) recently detected gravitational waves from the mergers of binary black hole systems.
A. J. Weinstein, A. Sottile, Abbott B. P., B. P. Abbott, C. Cahillane, C. Conley, D. Tuyenbayev, E. Goetz, E. H. Anders, G. Mendell, H. P. Daveloza, J. Berliner, J. Betzwieser, J. R. Gleason, J. S. Kissel, K. Izumi, L. Canete, M. Rodruck, M. Wade, M. West, N. De Lillo, P. B. Schwinberg, R. L. Savage, S. Kandhasamy, S. Karki, S. Sachdev, T. D. Abbott, T. Sadecki, Tuyenbayev D., V. Quetschke   +29 more
core   +4 more sources

Comparing a Gauge-Invariant Formulation and a “Conventional Complete Gauge-Fixing Approach” for l=0,1-Mode Perturbations on the Schwarzschild Background Spacetime

Universe
This article provides a comparison of the gauge-invariant formulation for l=0,1-mode perturbations on the Schwarzschild background spacetime, proposed by the same author in 2021, and a “conventional complete gauge-fixing approach” where the spherical ...
Kouji Nakamura
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

A gravitational wave detector operating beyond the quantum shot-noise limit: Squeezed light in application

EPJ Web of Conferences, 2013
This contribution reviews our recent progress on the generation of squeezed light [1], and also the recent squeezed-light enhancement of the gravitational wave detector GEO 600 [2].
Schnabel Roman
doaj   +1 more source

Coalescence of Kerr Black Holes—Binary Systems from GW150914 to GW170814

Entropy, 2019
We investigate the energy of the gravitational wave from a binary black hole merger by the coalescence of two Kerr black holes with an orbital angular momentum.
Bogeun Gwak
doaj   +1 more source