Results 61 to 70 of about 31,268 (166)
The origins of Causality Violations in Force Free Simulations of Black Hole Magnetospheres [PDF]
, 2003 Recent simulations of force-free, degenerate (ffde) black hole magnetospheres indicate that the fast mode radiated from (or near) the event horizon can modify the global potential difference in the poloidal direction orthogonal to the magnetic field, V ...
Blandford R. +4 more
core +2 more sources
NONLINEAR MHD WAVES IN A PROMINENCE FOOT [PDF]
The Astrophysical Journal, 2015 We study nonlinear waves in a prominence foot using 2.5D MHD model motivated by recent high-resolution observations with Hinode/SOT in Ca~II emission of a prominence on October 10, 2012 showing highly dynamic small-scale motions in the prominence material.
L. Ofman +3 more
openaire +3 more sources
Clinical and Experimental Dental Research, Volume 12, Issue 2, April 2026.ABSTRACT Objectives Vertical root fractures (VRFs) pose significant clinical challenges and may result in tooth loss. Current diagnostic methods, including conventional radiography and CBCT, are challenging to detect VRFs, especially in the early stages. Optical coherence tomography (OCT) has recently been introduced as a non‐invasive imaging technique
MHD. Mouaffak Alkhani +4 more
wiley +1 more source
Coronal Waves and Oscillations
Living Reviews in Solar Physics, 2005 Wave and oscillatory activity of the solar corona is confidently observed with modern imaging and spectral instruments in the visible light, EUV, X-ray and radio bands, and interpreted in terms of magnetohydrodynamic (MHD) wave theory.
Nakariakov Valery M., Verwichte Erwin
doaj
Journal of Magnetic Resonance Imaging, Volume 63, Issue 4, Page 1140-1154, April 2026.ABSTRACT Background The electrocardiogram (ECG) used for gating in cardiac MRI may be compromised by multiple confounders inside the scanner bore. Purpose To quantify the influence of magnetic field strengths (1.5 T/3 T/7 T), standardized electrode positions, and imaging sequences on ECG signals used for gating. Study Type Prospective.
Richard Hickstein +10 more
wiley +1 more source
Influence of Resonant Absorption on the Generation of the Kelvin-Helmholtz Instability
Frontiers in Physics, 2019 The inhomogeneous solar corona is continuously disturbed by transverse MHD waves. In the inhomogeneous environment of coronal flux tubes, these waves are subject to resonant absorption, a physical mechanism of mode conversion in which the wave energy is ...
Patrick Antolin, Tom Van Doorsselaere
doaj +1 more source
MHD wave transmission in the Sun’s atmosphere [PDF]
Astronomy & Astrophysics, 2011 MHD wave propagation inside the Sun's atmosphere is closely related to the magnetic field topology. For example, magnetic fields are able to lower the cutoff frequency for acoustic waves thus allowing waves which would otherwise be trapped below the photosphere to propagate into the upper atmosphere. Another example is that MHD waves can be transmitted
Stangalini, M +3 more
openaire +3 more sources
Auroral Emissions on Ganymede: New Constraints on Their Electron Energy Dependence
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract Auroral emissions on Ganymede provide critical insights into its magnetospheric dynamics and atmospheric composition. Using a physics‐based atmospheric model with recent atmospheric observations and laboratory measurements of electron‐impact cross‐sections, this study revisits and significantly refines the relationship between auroral emission
Xin Cao +5 more
wiley +1 more source
Effect of Magnetic Diffusion in the Chromosphere on the Solar Wind
The Astrophysical JournalWe investigate nonideal magnetohydrodynamical (MHD) effects in the chromosphere on the solar wind by performing MHD simulations for Alfvén-wave-driven winds, explicitly including ohmic and ambipolar diffusion.
Masato Matsuoka +3 more
doaj +1 more source
Evolution of Open Magnetic Flux During Substorms: The Effects of Dipole Tilt Angle
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract There is a long‐standing debate on the causes of the semiannual variation of geomagnetic activity. One of the prevailing hypotheses is that the Earth's dipole tilt angle Ψ ${\Psi }$ modulates the dayside reconnection rate, causing the so‐called equinoctial effect. Here we perform the first large‐scale statistical study to test this hypothesis.
A. Nair +3 more
wiley +1 more source