Results 71 to 80 of about 1,665 (178)

No Evidence for a Dip in the Binary Black Hole Mass Spectrum

The Astrophysical Journal
Stellar models indicate that the core compactness of a star, which is a common proxy for its explodability in a supernova, does not increase monotonically with the star’s mass.
Christian Adamcewicz, Paul D. Lasky, Eric Thrane, Ilya Mandel   +3 more
doaj   +1 more source

Research on Interferometric Tilt Sensor for Vibration Isolation Platform

Sensors
Low-frequency seismic vibrations extremely limit the performance of ground simulation facilities for space-borne gravitational wave detections, which need to be substantially suppressed. Active vibration systems are thus required.
Weigang Bai, Wenwu Feng, Peigen Wang, Ziliang Zhang, Guoying Zhao   +4 more
doaj   +1 more source

Modeling the Rising Tails of Galaxy Rotation Curves

Galaxies, 2019
It is well known, but under-appreciated in astrophysical applications, that it is possible for gravity to take on a life of its own in the form of Weyl-curvature-only metrics (note that we are referring to the Weyl-only solutions of ordinary General ...
Fan Zhang
doaj   +1 more source

Do Both Black Holes Spin in Merging Binaries? Evidence from GWTC-4 and Astrophysical Implications

The Astrophysical Journal
Angular momentum transport in high-mass stars is commonly modeled by extrapolating the behavior of better-observed low-mass stars. According to the conventional picture, the cores of most black hole progenitors lose almost all of their angular momentum ...
Christian Adamcewicz, Nir Guttman, Paul D. Lasky, Eric Thrane   +3 more
doaj   +1 more source

A deep learning framework for amplitude generation of generic EMRIs

European Physical Journal C: Particles and Fields
One of the main targets for space-borne gravitational wave detectors is the detection of Extreme Mass Ratio Inspiral (EMRIs). Data analysis of EMRIs requires waveform models that are both accurate and fast.
Yan-bo Zeng, Jian-dong Zhang, Yi-Ming Hu, Jianwei Mei   +3 more
doaj   +1 more source

Analysis of the effect of coupling coefficients on the slope of PDH-locked frequency discriminator

AIP Advances
The effects of the coupling coefficients on the reflected field and the error signal under various misalignments and near-axis conditions are analyzed, and some basic features of the error signal are investigated.
Qicheng Sun, Hongwen Hai, Ruqian Peng, Sijun Fang, Rui Zhang, Bohong Li, Jian Luo, Yehao Cao, Xinyu Li, Yong Yan   +9 more
doaj   +1 more source

Decline of the Current Quadrupole Moment during the Merger Phase of Binary Black Hole Coalescence

Universe, 2019
Utilizing the tools of tendex and vortex, we study the highly dynamic plunge and merger phases of several π -symmetric binary black hole coalescences. In particular, we observe a decline of the strength of the current quadrupole moment compared
Fan Zhang
doaj   +1 more source

Data Transmission Analysis and Communication Scheme Design for TianQin Mission

IEEE Access
Compared with ground-based gravitational wave detection, space-based gravitational wave detection has become a research hotspot because of its abundant wave sources.
Zhaoxiang Yi, Lin Sun, Meng Jiang
doaj   +1 more source

The Pointing Error Due To Laser Propagation in Space Plasma for TianQin Gravitational Wave Detection

Space Weather
TianQin, a space‐borne gravitational wave observatory, is designed to detect gravitational‐wave signals via laser interferometry. As the inhomogeneous space plasma surrounds the inter‐satellite laser links, the propagation of the laser in space plasma ...
Shenwei Zhou, Wei Su, Shiyuan Zhou, Chaofan Li, Jixiang Zhang   +4 more
doaj   +1 more source

GRAVITATIONAL WAVES AND ASTRONOMY [PDF]

Publications of The Korean Astronomical Society, 2011
Hyung-Mok Lee, Chang-Hwan Lee, Gung-Won Kang, John-J. Oh, Chung-Lee Kim, Sang-Hoon Oh   +5 more
openaire   +1 more source