Results 21 to 30 of about 3,424,177 (297)

Connecting the Properties of Coronal Shock Waves with Those of Solar Energetic Particles

open access: yesAstrophysical Journal, 2019
We develop and exploit a new catalog of coronal pressure waves modeled in 3D to study the potential role of these waves in accelerating solar energetic particles (SEPs) measured in situ.
A. Kouloumvakos   +7 more
semanticscholar   +1 more source

Dispersive shock waves and modulation theory [PDF]

open access: yes, 2016
There is growing physical and mathematical interest in the hydrodynamics of dissipationless/dispersive media. Since G.B. Whitham’s seminal publication fifty years ago that ushered in the mathematical study of dispersive hydrodynamics, there has been a ...
G. El, M. Hoefer
semanticscholar   +1 more source

Dispersive and Diffusive-Dispersive Shock Waves for Nonconvex Conservation Laws [PDF]

open access: yesSIAM Review, 2015
We consider two physically and mathematically distinct regularization mechanisms of scalar hyperbolic conservation laws. When the flux is convex, the combination of diffusion and dispersion is known to give rise to monotonic and oscillatory traveling ...
G. El, M. Hoefer, M. Shearer
semanticscholar   +1 more source

Shock Reduction Technique on Thin Plate Structure by Wave Refraction Using an Elastic Patch

open access: yesShock and Vibration, 2021
In general, bending waves transfer the largest portion of shock energy in a plate-like structure. This study proposes a new shock reduction method using an elastic patch designed to defocus the bending waves through the refraction of the waves so that it
Dae-Hyun Hwang, Jae-Hung Han
doaj   +1 more source

EVALUATION OF CORONAL SHOCK WAVE VELOCITIES FROM THE II TYPE RADIO BURSTS PARAMETERS

open access: yesOdessa Astronomical Publications, 2016
The work presents the results of research of connection between the coronal shock waves and the parameters of type II (mII) meter-decameter bursts in 25- 180 MHz band for 66 solar proton events.
V. V. Galanin   +2 more
doaj   +1 more source

Magnetic field fluctuations across the Earth’s bow shock [PDF]

open access: yesAnnales Geophysicae, 2001
We present a statistical analysis of 132 dayside (LT 0700-1700) bow shock crossings of the AMPTE/IRM spacecraft. We perform a superposed epoch analysis of low frequency, magnetic power spectra some minutes up-stream and downstream of the bow shock ...
A. Czaykowska   +7 more
doaj   +1 more source

Study of the conditions of fracture at explosive compaction of powders

open access: yesFracture and Structural Integrity, 2013
Joint theoretical and experimental investigations have allowed to realize an approach with use of mathematical and physical modeling of processes of a shock wave loading of powder materials.
Andrey E. Buzyurkin   +2 more
doaj   +3 more sources

X-ray free electron laser observation of ultrafast lattice behaviour under femtosecond laser-driven shock compression in iron

open access: yesScientific Reports, 2023
Over the past century, understanding the nature of shock compression of condensed matter has been a major topic. About 20 years ago, a femtosecond laser emerged as a new shock-driver. Unlike conventional shock waves, a femtosecond laser-driven shock wave
Tomokazu Sano   +30 more
doaj   +1 more source

Shock Wave Characterization Using Different Diameters of an Optoacoustic Carbon Nanotube Composite Transducer

open access: yesApplied Sciences, 2022
Carbon nanotube–polymethyl siloxane (CNT-PDMS) composite transducers generate shock waves using optoacoustic technology. A thin layer of thermally conductive CNT and elastomeric polymer, PDMS, is applied on the concave surface of transparent ...
Jooho Lee   +2 more
doaj   +1 more source

Sharp viscous shock waves for relaxation model with degeneracy

open access: yesAdvances in Nonlinear Analysis
This article is concerned with a relaxation model with degeneracy. Different from the existing studies on the regular viscous shock waves, we recognize that when the sub-characteristic condition is degenerate, the dynamical system possesses sharp viscous
Xu Shufang   +3 more
doaj   +1 more source

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