Zobrazeno 1 - 10
of 105 640
pro vyhledávání: '"sound speed"'
The Effective Field Theory of Large Scale Structure (EFTofLSS) has found tremendous success as a perturbative framework for the evolution of large scale structure, and it is now routinely used to compare theoretical predictions against cosmological o
Externí odkaz:
http://arxiv.org/abs/2410.11949
Sound zone control (SZC) implemented using static optimal filters is significantly affected by various perturbations in the acoustic environment, an important one being the fluctuation in the speed of sound, which is in turn influenced by changes in
Externí odkaz:
http://arxiv.org/abs/2410.07978
We search for a stochastic gravitational-wave background (SGWB) originating from scalar-induced gravitational waves (SIGWs) with the sound speed resonance (SSR) effect using data from Advanced LIGO and Advanced Virgo's first three observing runs. The
Externí odkaz:
http://arxiv.org/abs/2409.14929
Publikováno v:
Proceedings of the Institute of Acoustics 46(1) (2024)
The ocean's opacity poses challenges for security, as new technology, e.g. underwater drones, offers new opportunities for illegal activities, such as smuggling and terrorism. A network of unmanned surface vehicles (USV) and autonomous underwater veh
Externí odkaz:
http://arxiv.org/abs/2409.01933
Autor:
Loranger, Scott1,2 (AUTHOR), DeCourcy, Brendan2 (AUTHOR), Zhang, Weifeng Gordon2 (AUTHOR), Lin, Ying-Tsong2,3 (AUTHOR) bdecourcy@whoi.edu, Lavery, Andone2 (AUTHOR)
Publikováno v:
JASA Express Letters. Oct2024, Vol. 4 Issue 10, p1-7. 7p.
We demonstrate the occurrence of Sound Speed Resonances (SSR) in Gauss-Bonnet-coupled inflation across a wide range of coupling functions and parameters. After inflation, the damped oscillations of the inflaton around its potential minimum induces da
Externí odkaz:
http://arxiv.org/abs/2408.05091
Autor:
Yamauchi, Daisuke
We investigate the tensor clustering fossils as a possible probe to constrain the theory of gravity, in particular the deviation of the sound speed of gravitational waves from the speed of light at high redshifts. We develop the formalism of the effe
Externí odkaz:
http://arxiv.org/abs/2407.10450
Photoacoustic tomography (PAT) is a hybrid medical imaging technique that offer high contrast and a high spatial resolution. One challenging mathematical problem associated with PAT is reconstructing the initial pressure of the wave equation from dat
Externí odkaz:
http://arxiv.org/abs/2407.09749
Autor:
Yan, Weicheng, Zhang, Qiude, Wu, Yun, Liu, Zhaohui, Zhou, Liang, Ding, Mingyue, Yuchi, Ming, Qiu, Wu
Ultrasound computed tomography (USCT), as an emerging technology, can provide multiple quantitative parametric images of human tissue, such as sound speed and attenuation images, distinguishing it from conventional B-mode (reflection) ultrasound imag
Externí odkaz:
http://arxiv.org/abs/2406.08523
Autor:
Zhou, Dake
We show that the existence of massive neutron stars and asymptotic freedom of QCD place robust upper bounds on the lowest sound speed of the ultra-dense matter unattainable in neutron stars. Our approach does not rely on explicitly representing the e
Externí odkaz:
http://arxiv.org/abs/2408.16738