Results 91 to 100 of about 210,118 (339)

Tests of CPT invariance in gravitational waves with LIGO-Virgo catalog GWTC-1

European Physical Journal C: Particles and Fields, 2020
A discovery of gravitational waves from binary black holes raises a possibility that measurements of them can provide strict tests of CPT invariance in gravitational waves.
Sai Wang, Zhi-Chao Zhao
doaj   +1 more source

Kinetic Energy and Angular Momentum of Free Particles in the Gyratonic pp-Waves Space-times

, 2018
Gyratonic pp-waves are exact solutions of Einstein's equations that represent non-linear gravitational waves endowed with angular momentum. We consider gyratonic pp-waves that travel in the $z$ direction and whose time dependence on the variable $u={1 ...
Carneiro, F. L., da Rocha-Neto, J. F., Maluf, J. W., Ulhoa, S. C.   +3 more
core   +1 more source

Plant Robotics for Sustainable and Environmentally Friendly Robots: Insights from Actuation Characteristics

Advanced Science, EarlyView.
Plants are promising materials for building sustainable and eco‐friendly robots due to their inherent multifunctionality, with actuation playing a crucial role. This article focuses on the physical movements of plants and, from the perspective of actuation characteristics, explores representative plant species and their behaviors, the current state of ...
Kazuya Murakami, Misao Sato, Yu Ikeda, Tatsuhiro Horii, Yukari Nagatoshi, Miki Fujita, Toshinori Fujie, Yasunari Fujita, Jun Shintake   +8 more
wiley   +1 more source

Analytical and Numerical Methods for Circumbinary Disk Dynamics. II. Inclined Disks

The Astrophysical Journal
To gain insight into the dynamical influence of a supermassive black hole binary on a circumbinary accretion disk, we investigate the binary and viscous torque densities throughout such a disk, with emphasis on the final density distribution ...
Michal Pirog, Siddharth Mahesh, Sean T. McWilliams   +2 more
doaj   +1 more source

Calculating energy density and spin momentum density of Moon’s gravitational waves in rectilinear coordinates

Sistemnì Doslìdženâ ta Informacìjnì Tehnologìï, 2019
In this research the energy density was calculated and the spin momentum density of Moon’s gravitational waves in the rectilinear coordinates’ system of Moon’s gravity and Earth’s global temperature. At first, we assumed an action principle that combines
Yoshio Matsuki, Petro I. Bidyuk
doaj   +1 more source

A method to measure a relative transverse velocity of source-lens-observer system using gravitational lensing of gravitational waves

, 2009
Gravitational waves propagate along null geodesics like light rays in the geometrical optics approximation, and they may have a chance to suffer from gravitational lensing by intervening objects, as is the case for electromagnetic waves.
A. R. Thompson, Makoto Hattori, P. Schneider, R. Kayser, Toshifumi Futamase, Yousuke Itoh   +5 more
core   +1 more source

Multi‐Soliton Microcombs Enable Ultrafast Nanometric‐Precision Ranging and Photon‐Level Detection

Advanced Science, EarlyView.
Our work first demonstrates dual‐multi‐soliton ranging and confirms its multifunctional capability. The method achieves ultrafast and nanometric‐precision measurement. For practical applications, we further extend the multi‐soliton states to photon‐level ranging.
Jiawen Zhi, Xiaoyang Guo, Xusheng Yang, Brent E. Little, Sai T. Chu, Chenggang Shao, Mengyu Wang, Yan Liang, Peng Xie, Weiqiang Wang, Hanzhong Wu   +10 more
wiley   +1 more source

Experimental Joint Estimation of Phase and Phase Diffusion Via Deterministic Bell Measurements

Advanced Science, EarlyView.
This work employs Bell measurement, a form of entangling measurement, to estimate both the phase and its fluctuations in an optical interferometer. By incorporating a novel quantum effect at the measurement stage, the proposed method achieves the ultimate precision limit and demonstrates the significant potential of entangling measurements in multi ...
Ben Wang, Minghao Mi, Huangqiuchen Wang, Qian Xie, Lijian Zhang   +4 more
wiley   +1 more source

Prevalence of Compact Nuclear Radio Emission in Post-merger Galaxies and Its Origin

The Astrophysical Journal
Post-merger galaxies are unique laboratories to study the triggering and interplay of star formation and active galactic nucleus (AGN) activity. Combining new, high-resolution Jansky Very Large Array (VLA) observations with archival radio surveys, we ...
Gregory Walsh, Sarah Burke-Spolaor
doaj   +1 more source

Primordial Gravitational Waves From Black Hole Evaporation in Standard and Non-Standard Cosmologies [PDF]

, 2023
Aurora Ireland, Stefano Profumo, Jordan Scharnhorst   +2 more
openalex   +1 more source