Results 71 to 80 of about 269,887 (159)

Spiral soliton solution for disk galaxies

, 2003
In this paper, weakly nonlinear dynamics of spiral galaxies is studied, using reductive perturbation method. One primarily aims at the derivation of possible soliton solution for two dimensional geometry, in the state of marginal stability.
Miroslava Savkovic, Z. Yoshida, Savković Miroslava, Yoshida Z.   +3 more
core   +1 more source

Exact Solutions and Nonlinear Dynamical Behavior in a Navier‐Stokes‐Type Model for Elastic Cylindrical Vessels: An Analytical and Computational Approach

Engineering Reports, Volume 8, Issue 6, June 2026.
This study investigates a nonlinear Navier‐Stokes‐type model for elastic cylindrical vessels. Exact solutions are derived via the Bäcklund transformation and the ϕ6$$ {\phi}^6 $$‐expansion method, and dynamical behaviors are analyzed using bifurcation and chaos tools, revealing diverse wave structures and parameter‐dependent propagation characteristics.
Sheikh Zain Majid, Fatma Nur Kaya Sağlam, Mohammad Safi Ullah   +2 more
wiley   +1 more source

Analytical and Numerical Soliton Solutions of the Shynaray II‐A Equation Using the G′G,1G$$ \left(\frac{G^{\prime }}{G},\frac{1}{G}\right) $$‐Expansion Method and Regularization‐Based Neural Networks

Mathematical Methods in the Applied Sciences, Volume 49, Issue 9, Page 9814-9831, June 2026.
ABSTRACT Nonlinear differential equations play a fundamental role in modeling complex physical phenomena across solid‐state physics, hydrodynamics, plasma physics, nonlinear optics, and biological systems. This study focuses on the Shynaray II‐A equation, a relatively less‐explored parametric nonlinear partial differential equation that describes ...
Aamir Farooq, H. W. A. Riaz, Sadique Rehman, M. Mamun Miah, Wen Xiu Ma   +4 more
wiley   +1 more source

Soliton solution of good Boussinesq equation

, 2016
Using Hirota’s direct bilinear method, we develop the soliton solution of the good Boussinesq equation. A mathematical justification of the solution formula is presented.
Nguyen, Lu Trong Khiem
core   +1 more source

Gravity Wave Influences on MSTID Climatology Over CONUS: WACCM‐X Year‐Long Simulation and GNSS Long‐Term Observation

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Medium‐Scale Traveling Ionospheric Disturbances (MSTIDs) are prominent wave‐like structures in the ionosphere, with complex generation mechanisms involving both atmospheric gravity waves (GWs) and electrodynamic instabilities such as the Perkins instability (PI).
Jing Liu, Shun‐Rong Zhang, Hanli Liu, Anthea J. Coster, Philip J. Erickson   +4 more
wiley   +1 more source

Hydrographic Variability and Sound‐Channel Dynamics in the Nordic Seas: Implications for Predicting Acoustic Arrival Structure

Journal of Geophysical Research: Oceans, Volume 131, Issue 6, June 2026.
Abstract Warm, saline Atlantic waters and fresher Arctic‐origin waters converge in the central Nordic Seas, creating strong mesoscale and submesoscale variability that influences both hydrography and sound propagation. During the Northern Ocean Rapid Surface Evolution 2022 experiment, high‐resolution temperature and salinity measurements were collected
Megan S. Ballard, Alejandra Sanchez‐Rios, Robert T. Taylor, Timothy F. Duda, J. Thomas Farrar, Harper Simmons, Jason D. Sagers, Jennifer Mackinnon, Andrew J. Lucas, Leah Johnson, Ailin Brakstad, Ilker Fer   +11 more
wiley   +1 more source

N-wave interactions related to simple lie algebras. ℤ2-reductions and soliton solutions

, 2001
The reductions of the integrable N-wave type equations solvable by the inverse scattering method with the generalized Zakharov-Shabat systems L and related to some simple Lie algebra g are analysed.
Grahovski, G G, Kostov, N A, Gerdjikov, V S, Ivanov, R I   +3 more
core   +1 more source

Drivers of F‐Region Ionosphere Tidal Variability Caused by the Madden Julian Oscillation: Separating E‐Region Dynamo and Field‐Aligned Wind Effects

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract The Madden–Julian Oscillation (MJO), a recurring intraseasonal (30–96 days) disturbance in the troposphere, strongly influences the E‐region and F‐region ionosphere through its modulation of atmospheric tides. Among these, the diurnal eastward wave number 3 (DE3) tide, driven by MJO‐modulated latent heating, carries MJO signals upward into the
Deepali Aggarwal, Jens Oberheide, B. C. Martinez, Xian Lu, Sunil Kumar   +4 more
wiley   +1 more source

Advanced fibre Bragg gratings: application to dispersion compensation

, 1999
This thesis presents the design and fabrication issues related to advanced fibre Bragg gratings with particular emphasis on realising novel devices with application to dispersion compensation.
Durkin, Michael Kevan
core  

The Proton‐Alpha Instability as a Source of Ion Heating at Earth's Bow Shock

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Electrostatic waves are frequently observed at collisionless shocks and are believed to play a key role in energy dissipation. Recent spacecraft observations have identified a proton‐alpha instability in the Earth's bow shock as a potential mechanism to dissipate the energy associated with a relative drift between protons and alpha particles ...
N. Müller, K. Steinvall, D. B. Graham, I. Pusztai   +3 more
wiley   +1 more source