Tracing large-scale structures in circumstellar disks with ALMA
, 2012 Planets are supposed to form in circumstellar disks. The gravitational potential of a planet perturbs the disk and leads to characteristic structures, i.e. spiral waves and gaps, in the disk's density profile.
Klahr, Hubert H. +3 more
core +1 more source
Towards a New Standard Model for Black Hole Accretion [PDF]
, 2007 We briefly review recent developments in black hole accretion disk theory, emphasizing the vital role played by magnetohydrodynamic (MHD) stresses in transporting angular momentum.
A. Koratkar +31 more
core +3 more sources
The Interplay of Magnetic Fields, Fragmentation and Ionization Feedback in High-Mass Star Formation
, 2011 Massive stars disproportionately influence their surroundings. How they form has only started to become clear recently through radiation gas dynamical simulations.
Arce +41 more
core +1 more source
Magnetohydrodynamic turbulence in warped accretion discs [PDF]
, 2001 Warped, precessing accretion discs appear in a range of astrophysical systems, for instance the X-ray binary Her X-1 and in the active nucleus of NGC4258.
Brandenburg, A. +5 more
core +3 more sources
RESISTIVE MAGNETOHYDRODYNAMICS SIMULATIONS OF THE IDEAL TEARING MODE [PDF]
The Astrophysical Journal, 2015 We study the linear and nonlinear evolution of the tearing instability on thin current sheets by means of two-dimensional numerical simulations, within the framework of compressible, resistive magnetohydrodynamics. In particular we analyze the behavior of current sheets whose inverse aspect ratio scales with the Lundquist number $S$ as $S^{-1/3}$. This
LANDI, SIMONE +4 more
openaire +4 more sources
Three-dimensional magnetohydrodynamic simulations of the Crab nebula [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 In this paper we give a detailed account of the first 3D relativistic magnetohydrodynamic (MHD) simulations of Pulsar Wind Nebulae (PWN), with parameters most suitable for the Crab Nebula. In order to clarify the new features specific to 3D models, reference 2D simulations have been carried out as well.
O. Porth, S. S. Komissarov, R. Keppens
openaire +6 more sources
Magnetohydrodynamic Simulation of Forced Magnetic Reconnection
Iranian Journal of Astronomy and Astrophysics, 2023 Magnetic reconnection is a fundamental process in laboratory, astrophysical, and space plasmas, which is a mechanism for converting magnetic energy into the thermal and kinetic energy of plasma and the efficient acceleration of charged particles.
Sarkhosh, Masom +2 more
openaire +2 more sources
Turbulence in collisionless plasmas : statistical analysis from numerical simulations with pressure anisotropy [PDF]
, 2014 In recent years, we have experienced increasing interest in the understanding of the physical properties of collisionless plasmas, mostly because of the large number of astrophysical environments (e. g.
Falceta-Goncalves, D. A. +2 more
core +1 more source
The Wardle Instability in Interstellar Shocks: I. Nonlinear Dynamical Evolution
, 1997 The nonlinear evolution of unstable C-type shocks in weakly ionized plasmas is studied by means of time-dependent magnetohydrodynamical simulations.
James M. Stone +5 more
core +2 more sources
Cosmic-ray driven dynamo in the medium of irregular galaxy [PDF]
, 2009 We investigate the cosmic ray driven dynamo in the interstellar medium of irregular galaxy. The observations (Chyzy et al. 2000, 2003) show that the magnetic field in irregular galaxies is present and its value reaches the same level as in spiral ...
Chyży +7 more
core +6 more sources