Results 1 to 10 of about 29,056 (316)

Analysis of negative flow of gravitational waves

open access: yesSistemnì Doslìdženâ ta Informacìjnì Tehnologìï, 2019
In this article, we made the mathematical explanation of the anti-gravitational waves, by the inspiration that we got from the observed positron in cosmic rays.
Yoshio Matsuki, Petro I. Bidyuk
doaj   +1 more source

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

open access: yesThe 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

First Search for Nontensorial Gravitational Waves from Known Pulsars

open access: yes, 2018
We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric theory may, in principle, predict waves with up to six different ...
B.P. Abbott et al., 배상욱, 강궁원
core  

Probing the speed of scalar induced gravitational waves from observations

open access: yesEuropean Physical Journal C: Particles and Fields
The propagation speed of gravitational waves is a fundamental issue in gravitational theory. According to general relativity, gravitational waves propagate at the speed of light.
Jun Li, Guang-Hai Guo, Yongcan Zu
doaj   +1 more source

Effects of Non-Standard Neutrinos on Gravitational Waves [PDF]

open access: yes
openIt is well known that the primordial stochastic background of gravitational waves (GWs) can be damped due to the free-streaming of neutrinos during the propagation of GWs through cosmic structures. However, for some frequencies of the GWs an opposite
GURSES, EYUP
core  

Effects of dense matter on the tidal deformations of binary neutron star inspirals and gravitational waves

open access: yes, 2022
The role of the dense matter properties on the tidal deformability and gravitational waveforms of binary neutron stars is studied using a set of unified equations of state.
Perot, Loïc, Chamel, Nicolas
core   +1 more source

Thermoelastic effects in Bragg reflectors as a potential bottleneck for XFELs with megahertz repetition rate

open access: yesCommunications Physics
Bragg reflectors are essential for beam transport in X-ray free-electron laser (XFEL) facilities. On interaction with Bragg reflectors, a part of the pulse energy will be absorbed, causing the propagation of displacement waves due to rapid thermal ...
Immo Bahns   +4 more
doaj   +1 more source

Virgo and the worldwide search for gravitational waves

open access: yes, 2004
VIRGOLarge interferometric detectors of gravitational waves are approaching their design sensitivities and the plans for second generation detectors, expected to start the gravitational wave astronomy, are already under way.
Flaminio, R.   +413 more
core   +1 more source

Monte Carlo Evaluations of Gamma-Ray and Radio Pulsar Populations

open access: yesThe Astrophysical Journal
Based on well-grounded Galactic neutron star populations formed from radio pulsar population syntheses of canonical pulsars (CPs) and millisecond pulsars (MSPs), we use the latest Fermi Large Area Telescope catalog (4FGL-DR4) to investigate the ...
Shawaiz Tabassum, Duncan R. Lorimer
doaj   +1 more source

Constrain the time variation of the gravitational constant via the propagation of gravitational waves

open access: yesPhysics Letters B
The gravitational constant variation means the breakdown of the strong equivalence principle. As the cornerstone of general relativity, the validity of general relativity can be examined by studying the gravitational constant variation.
Bing Sun, Jiachen An, Zhoujian Cao
doaj   +1 more source

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