Results 101 to 110 of about 1,046 (208)

Fluctuation Dynamos in Supersonic Turbulence at Pm ≳ 1

The Astrophysical Journal
Fluctuation 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, Sharanya Sur, Bhargav Vaidya   +2 more
doaj   +1 more source

Interaction of a magnetized pulsar wind with its surroundings - MHD simulations of pulsar wind nebulae

, 2003
Magnetohydrodynamical simulations are presented of a magnetized pulsar wind interacting directly with the interstellar medium, or, in the case of a surrounding supernova remnant, with the associated freely expanding ejecta of the progenitor star. In both
E. van der Swaluw, van der Swaluw, E.
core   +1 more source

The prevalence of pseudo-bulges in the Auriga simulations [PDF]

, 2019
We study the galactic bulges in the Auriga simulations, a suite of 30 cosmological magnetohydrodynamical zoom-in simulations of late-type galaxies in Milky Way sized dark matter haloes performed with the moving-mesh code AREPO.
Grand R. J. J., Marinacci F., Monachesi A., Fragkoudi F., Tissera P., Gargiulo I. D., Pakmor R., White S. D. M., Bell E. F., Gomez F. A.   +9 more
core   +1 more source

Vortex Motions in the Solar Atmosphere: Definitions, Theory, Observations, and Modelling. [PDF]

Space Sci Rev, 2023
Tziotziou K, Scullion E, Shelyag S, Steiner O, Khomenko E, Tsiropoula G, Canivete Cuissa JR, Wedemeyer S, Kontogiannis I, Yadav N, Kitiashvili IN, Skirvin SJ, Dakanalis I, Kosovichev AG, Fedun V.   +14 more
europepmc   +1 more source

Numerical viscosity and resistivity in MHD turbulence simulations

, 2023
To ensure that magnetohydrodynamical (MHD) turbulence simulations accurately reflect the physics, it is critical to understand numerical dissipation. Here we determine the hydrodynamic and magnetic Reynolds number (Re and Rm) as a function of linear grid
Federrath, Christoph, Shivakumar, Lakshmi Malvadi   +1 more
core  

Interplay between tidal flows and magnetic fields in nonlinear simulations of stellar and planetary convective envelopes [PDF]

Stars and planets in close systems are magnetised but the influence of magnetic fields on their tidal responses (and vice versa) and dissipation rates has not been well explored. We present exploratory nonlinear magnetohydrodynamical (MHD) simulations of
Astoul, A., Barker, A.J.
core   +3 more sources

Learning effective physical laws for generating cosmological hydrodynamics with Lagrangian deep learning. [PDF]

Proc Natl Acad Sci U S A, 2021
Dai B, Seljak U.
europepmc   +1 more source

SIMULATIONS OF MAGNETOACOUSTIC PULSATIONS IN ATMOSPHERES OF RAPIDLY OSCILLATING Ap STARS

, 2009
Rapidly oscillating Ap (roAp) stars exhibit an astrophysically interesting combination of strong, dipolar-like magnetic fields and high-overtone p-mode pulsations similar to the Sun.
E. Khomenko, Kochukhov, Oleg,, O. Kochukhov, Khomenko, E.   +3 more
core   +1 more source

Self-consistent spectra from radiative GRMHD simulations of accretion on to Sgr A* [PDF]

, 2013
We present the first spectral energy distributions produced self-consistently by 2.5D general relativistic magnetohydrodynamical (GRMHD) numerical simulations, where radiative cooling is included in the dynamical calculation. As a case study, we focus on
Dexter, J., Drappeau, S., Markoff, S., Fragile, P.C., Dibi, S.   +4 more
core   +1 more source

The Life and Times of Star-forming Cores: An Analysis of Dense Gas in the STARFORGE Simulations

The Astrophysical Journal
Dense gas in molecular clouds is an important signature of ongoing and future star formation. We identify and track dense cores in the starforge simulations, following the core evolution from birth through dispersal by stellar feedback for typical Milky ...
Stella S. R. Offner, Josh Taylor, Michael Y. Grudíc   +2 more
doaj   +1 more source