Results 61 to 70 of about 1,186 (178)

Jet-shaped filamentary ejecta in common envelope evolution

The Open Journal of Astrophysics
We conduct three-dimensional (3D) hydrodynamical simulations of common envelope evolution (CEE) of a neutron star (NS) that launches jets as it spirals in inside the envelope of a rotating red supergiant (RSG) stellar envelope and find that Rayleigh ...
Ron Schreier, Shlomi Hillel, Noam Soker
doaj   +1 more source

On classical solutions of Rayleigh–Taylor instability in inhomogeneous viscoelastic fluids

Boundary Value Problems, 2019
We study the nonlinear Rayleigh–Taylor (RT) instability of an inhomogeneous incompressible viscoelastic fluid in a bounded domain. It is well known that there exist strong solutions of RT instability in H2 $H^{2}$-norm in inhomogeneous incompressible ...
Zhidan Tan, Weiwei Wang
doaj   +1 more source

A Reduced Dimensional Emulator for Forecasting Equatorial Spread F

Space Weather, Volume 24, Issue 6, June 2026.
Abstract A machine learning emulator has been developed to efficiently reproduce electron densities from a three‐dimensional, data‐driven, regional simulation of postsunset ionospheric irregularities associated with equatorial spread F (ESF). The simulation has previously been shown to produce accurate ESF conditions observed at the Jicamarca Radio ...
A. Kirchman, D. L. Hysell, S. Palacios
wiley   +1 more source

Impacts of E‐Region Neutral Wind Shear on Equatorial Plasma Bubbles: SAMI3 Simulations Including Metal Ions

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract The vertical shear of horizontal neutral winds plays an important role in forming dense metallic layers in the E region. Previous studies suggest that metal ion layers may inhibit equatorial plasma bubble (EPB) development by enhancing E‐region Pedersen conductivity.
Minjing Li, Yue Deng, Joseph D. Huba, Zihan Wang   +3 more
wiley   +1 more source

Ionospheric Vertical Plasma Drifts Over South America: Long‐Term Multi‐Instrument Observations and TIEGCM and WACCM‐X Evaluations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract We present the first comprehensive multi‐instrument climatological study of quiet‐time equatorial F‐region vertical plasma drifts across South America, a region where the magnetic declination angle varies significantly. Our analysis of well‐established long‐term ground‐based data sets from the Jicamarca incoherent scatter radar spanning 1968 ...
Sophia R. Laranja, Bela G. Fejer, Clezio M. Denardini, Ludger Scherliess, Laysa C. A. Resende, Sony S. Chen, Giorgio A. S. Picanço   +6 more
wiley   +1 more source

Rayleigh-Taylor Instability at the Interface of Superposed Couple-Stress Casson Fluids Flow in Porous Medium under the Effect of a Magnetic Field

Journal of Applied Fluid Mechanics, 2014
The Rayleigh-Taylor instability (RIT) at the interface of two superposed Couple-stress Casson fluids flowing in porous medium and in the presence of a uniform normal magnetic field is studied. The fluids have different densities.
M. Agoor. Bothaina
doaj  

Relative Source Time Functions, Spectral Ratios, and Near‐Source Spallation in the Source Physics Experiment Phase I Chemical Explosions

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract The Source Physics Experiment (SPE) Phase I was composed of six chemical explosions at the Nevada National Security Sites (NNSS) between 2011 and 2016. The experiment provided a robust set of dense, local to regional distance observations suitable for characterizing shallow chemical explosions located within the same borehole.
James E. Pippin, Charles J. Ammon, Jonas A. Kintner   +2 more
wiley   +1 more source

Nanomaterials synthesis by a novel phenomenon: The nanoscale Rayleigh-Taylor instability

AIP Advances, 2014
The Rayleigh-Taylor (RT) interfacial instability has been attributed to physical phenomenon in a wide variety of macroscopic systems, including black holes, laser generated plasmas, and thick fluids.
S. Yadavali, R. Kalyanaraman
doaj   +1 more source

A study of bubble growth in the compressible Rayleigh–Taylor and Richtmyer–Meshkov instabilities

AIP Advances, 2020
Within the framework of modified Layzer-type potential flow theory [V. N. Goncharov, “Analytical model of nonlinear, single-mode, classical Rayleigh-Taylor instability at arbitrary Atwood numbers,” Phys. Rev. Lett.
Yubin Zhao, Mengjiao Xia, Yigang Cao
doaj   +1 more source

Daytime Ionospheric F‐Region Topside Irregularities Associated With Significant Density Enhancement at Low Latitudes During the 12 November 2025 Magnetic Storm

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract In this study, daytime F‐region irregularities were observed at low latitudes during the main phase of the 12 November 2025 strong magnetic storm, causing intense very high frequency radar echoes ranging hundreds of kilometers in altitude.
Wenjie Sun, Guozhu Li, Guofeng Dai, Haiyong Xie, Lianhuan Hu, Biqiang Zhao, Zequan Wang, Jianfei Liu, Xiukuan Zhao, Yi Li, Baiqi Ning   +10 more
wiley   +1 more source