ABSTRACT Alfven wave is the single most important physical phenomenon of magneto-hydrodynamic (MHD) turbulence and has far-reaching impact to almost all studies related astrophysical magnetic field. Yet restoration fluctuations from a given field, aka local problem, never properly addressed in literature albeit its importance. Previous works model fluctuation as perturbation along straight-line...

We aim at demonstrating the capabilities of a newly developed method for determining electric currents in solar photosphere. employ three-dimensional radiative magneto-hydrodynamic (MHD) simulations to produce synthetic Stokes profiles several spectral lines with spatial resolution similar what operational 4-meter Daniel K. Inouye Solar Telescope (DKIST) telescope should achieve. apply inversio...

Recent experiments have shown that it is possible to study a fundamental astrophysical process such as dynamo action in controlled laboratory conditions using simple MHD flows. In this paper we explore the possibility that Taylor-Couette flow, already proposed as a model of the magneto-rotational instability of accretion discs, can sustain generation of magnetic field. Firstly, by solving the k...

Modern problems of radiative aerothermodynamics of entering space vehicles are demonstrated and analyzed in the paper. New radiative gas dynamic problems concerned to coupling processes of non-equilibrium dissociation with radiation heat transfer in shock layers generated above large scale re-entry space vehicles returning from orbital and super orbital space mission are considered in the first...

We present self-consistent global, steady-state MHD models and synthetic optically thin synchrotron emission maps for the jet of M87. The model consist of two distinct zones: an inner relativistic outflow, which we identify with the observed jet, and an outer cold disk-wind. While the former does not selfcollimate efficiently due to its high effective inertia, the latter fulfills all the condit...

Poloidal rotation is routinely observed in present-day tokamak experiments, in particular near the plasma edge and in the high-confinement mode of operation. According to the magnetohydrodynamic (MHD) equilibrium theory [R. Betti and J. P. Freidberg, Phys. Plasmas 7, 2439 (2000)], radial discontinuities form when the poloidal velocity exceeds the poloidal sound speed (or rather, more correctly,...

In this paper we carry out numerical modeling of coronal jets to understand their effects on the global corona and their contribution to the solar wind. We simulated jet models implemented within a well established three dimensional, two-temperature magneto-hydrodynamic (MHD) solar corona model that is built upon kinetic Alvén wave dissipation, producing realistic solar wind background. The jet...

A compact and comprehensive interface, called ESI, between magneto-hydrodynamic (MHD) equilibrium codes and gyro-kinetic, particle orbit, MHD stability, and transport codes is presented. Its irreducible set of equilibrium data consists of four 2or 3-D functions of coordinates and four 1-D radial profiles together with their first derivatives. The C reconstruction routines (accessible also from ...

We compare the statistical properties of J=1→0 CO spectra observed in the Perseus Molecular Cloud with synthetic J=1→0 CO spectra from a 5 pc model cloud. The synthetic spectra are computed solving the non–LTE radiative transfer problem for a model cloud obtained as solutions of the 3–D magneto–hydrodynamic (MHD) equations in both the highly supersonic and super–Alfvénic regimes of random flows...