Results 91 to 100 of about 550 (177)
Fluctuation Dynamos in Supersonic Turbulence at Pm ≳ 1
The Astrophysical JournalFluctuation dynamos provide a robust mechanism for amplifying weak seed magnetic fields in turbulent astrophysical plasmas. However, their behaviour in the highly compressible regimes characteristic of the interstellar medium remains incompletely ...
Ameya Uday Nagdeo +2 more
doaj +1 more source
The UK Met Office’s Coronal Mass Ejection (CME) Ensemble Prediction System
Space Weather, Volume 24, Issue 7, July 2026.Abstract We describe the 24‐member Coronal Mass Ejection (CME) ensemble prediction system that is used operationally at the UK's Met Office Space Weather Operations Center (MOSWOC) to forecast the arrival time of CMEs at Earth. The ensemble system was built on ad‐hoc assumptions and there is the need to investigate whether the technique can be improved
Siegfried Gonzi +8 more
wiley +1 more source
The Evolution of Substructure during Star Cluster Assembly
The Astrophysical JournalStar cluster formation and assembly occur inside filamentary and turbulent molecular clouds, which imprint both spatial and kinematic substructure on the young cluster.
Edwin Laverde-Villarreal +3 more
doaj +1 more source
On the effect of oscillatory phenomena on Stokes inversion results. [PDF]
Philos Trans A Math Phys Eng Sci, 2021 Keys PH, Steiner O, Vigeesh G.
europepmc +1 more source
Spectral Element Simulation of Liquid Metal Magnetohydrodynamics
CoRRA spectral-element-based formulation of incompressible MHD is presented in the context of the open-source fluid-thermal code, Nek5000/RS. The formulation supports magnetic fields in a solid domain that surrounds the fluid domain. Several steady-state and time-transient model problems are presented as part of the code verification process. Nek5000/RS is
Yichen Guo, Paul F. Fischer, Misun Min
openaire +2 more sources
Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.Abstract Magnetic reconnection is a highly dynamic process that excites a wide variety of kinetic waves and instabilities. Transverse current sheet instabilities such as the lower‐hybrid drift and secondary drift‐kink instabilities in particular have been shown by kinetic simulations to modify the reconnection and introduce significant turbulence and ...
K. Bradshaw +5 more
wiley +1 more source
The Astrophysical JournalBlack hole (Bh) X-ray binaries cycle through different spectral states of accretion over the course of months to years. Although persistent changes in the Bh mass accretion rate are generally recognized as the most important component of state ...
M. T. P. Liska +4 more
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Inertial Alfvén Waves With Magnetosphere‐Ionosphere Coupling and Feedback
Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.Abstract We present a theory of the ionospheric feedback instability (IFI) in which the finite‐thickness h $h$ of the ionosphere is represented by a frequency‐ and scale‐dependent height‐integrated Pedersen conductance, YI≡∑inΩ,k⊥,h, ${Y}_{\mathrm{I}}\equiv {\mathrm{\sum }}_{\text{in}}\left({\Omega },{k}_{\perp },h\right),$ electromagnetically coupled ...
R. Rankin, Q.‐G. Zong, W. Wang
wiley +1 more source
Multimessenger Binary Mergers Containing Neutron Stars: Gravitational Waves, Jets, and <i>γ</i>-Ray Bursts. [PDF]
Front Astron Space Sci, 2021 Ruiz M, Shapiro SL, Tsokaros A.
europepmc +1 more source
Magnetohydrodynamic Simulation of Solar Supergranulation
, 2006 Three-dimensional magnetohydrodynamical large eddy simulations of solar surface convection using realistic model physics is conducted. The effects of magnetic fields on thermal structure of convective motions into radiative layers, the range of convection cell sizes and penetration depths of convection is investigated. We simulate a some portion of the
openaire +2 more sources