Results 31 to 40 of about 2,732,923 (363)
Gravitational breathing memory and dual symmetries
Journal of High Energy Physics, 2021 Brans-Dicke theory contains an additional propagating mode which causes homogeneous expansion and contraction of test bodies in transverse directions.
Ali Seraj
doaj +1 more source
Observation of Gravitational Waves from a Binary Black Hole Merger [PDF]
, 2016 On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal.
The Ligo Scientific Collaboration +1 more
semanticscholar +1 more source
Detecting gravitational waves from cosmological phase transitions with LISA: an update [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 We investigate the potential for observing gravitational waves from cosmological phase transitions with LISA in light of recent theoretical and experimental developments. Our analysis is based on current state-of-the-art simulations of sound waves in the
C. Caprini +13 more
semanticscholar +1 more source
Gravitational waves as a big bang thermometer [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 There is a guaranteed background of stochastic gravitational waves produced in the thermal plasma in the early universe. Its energy density per logarithmic frequency interval scales with the maximum temperature Tmax which the primordial plasma attained ...
A. Ringwald +2 more
semanticscholar +1 more source
Did Goryachev et al. detect megahertz gravitational waves? [PDF]
Physical Review D 104, 103017 (2021), 2021 Goryachev et al. [1] recently announced the detection of "two strongly significant events" in their Bulk Acoustic Wave High Frequency Gravitational Wave Antenna. They claim many possibilities for the cause of these events, including high-frequency megahertz gravitational waves.
arxiv +1 more source
Primordial black holes and secondary gravitational waves from k and G inflation [PDF]
Physical Review D, 2020 The possibility that in the mass range around 10-12 M⊙ most of dark matter is constituted of primordial black holes (PBHs) is a very interesting topic.
Jiong Lin +5 more
semanticscholar +1 more source
Thermal Gravitational Waves [PDF]
The Open Astronomy Journal, 2011 20 pages, 57 ...
Kenath Arun, C. Sivaram
openaire +3 more sources
Multipole expansion of gravitational waves: from harmonic to Bondi coordinates
Journal of High Energy Physics, 2021 We transform the metric of an isolated matter source in the multipolar post-Minkowskian approximation from harmonic (de Donder) coordinates to radiative Newman-Unti (NU) coordinates.
Luc Blanchet +4 more
doaj +1 more source
Drop breakage in a single‐pass through vortex‐based cavitation device: Experiments and modeling
AIChE Journal, Volume 69, Issue 1, January 2023., 2023 Abstract Liquid–liquid emulsions are used in many sectors such as personal care, home care, and food products. There is an increasing need for developing compact and modular devices for producing emulsions with desired droplet size distribution (DSD). In this work, we have experimentally and computationally investigated an application of vortex‐based ...
Abhijeet H. Thaker, Vivek V. Ranade
wiley +1 more source
Gravitational waves induced by scalar perturbations with a lognormal peak [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 We study the stochastic gravitational wave (GW) background induced by the primordial scalar perturbation with the spectrum having a lognormal peak of width Δ at k=k*. We derive an analytical formula for the GW spectrum ΩGW for both narrow (Δ≪1) and broad
Shi Pi, Misao Sasaki
semanticscholar +1 more source