English
Related papers

Related papers: Nonstationary magnetorotational processes in a rot…

200 papers

Results of 2D numerical simulation of magnetorotational mechanism of supernova explosion are presented. It is shown that due to the differential rotation of the star toroidal component of magnetic field appears and grows with time. Angular…

Astrophysics · Physics 2007-05-23 N. V. Ardeljan , G. S. Bisnovatyi-Kogan , S. G. Moiseenko

We present the results of 2D simulations of the magnetorotational model of a supernova explosion. After the core collapse the core consists of rapidly a rotating proto-neutron star and a differentially rotating envelope. The toroidal part…

Astrophysics · Physics 2009-11-10 N. V. Ardeljan , G. S. Bisnovatyi-Kogan , S. G. Moiseenko

Results of 2D simulations of the magnetorotational mechanism of supernova type II are presented. Amplification of toroidal magnetic field of the star due to differential rotation of the star leads to the transformation of the rotational…

Astrophysics · Physics 2007-05-23 S. G. Moiseenko , G. S. Bisnovatyi-Kogan , N. V. Ardeljan

Core-collapse supernovae are accompanied by formation of neutron stars. The gravitation energy is transformed into the energy of the explosion, observed as SN II, SN Ib,c type supernovae. We present results of 2-D MHD simulations, where the…

High Energy Astrophysical Phenomena · Physics 2014-08-12 G. S. Bisnovatyi-Kogan , S. G. Moiseenko , N. V. Ardeljan

We investigate, through 2D MHD numerical simulations, the interaction of a uniform magnetic field oblique to a moving interstellar cloud. In particular we explore the transformation of cloud kinetic energy into magnetic energy as a result…

Astrophysics · Physics 2016-08-30 Francesco Miniati , T. W. Jones , Dongsu Ryu

We present the results of a numerical magnetohydrodynamic simulation that demonstrates a mechanism by which magnetic fields tap rotational energy of a stellar core and expel the envelope. Our numerical setup, designed to focus on the basic…

Astrophysics · Physics 2009-11-11 Sean Matt , Adam Frank , Eric G. Blackman , ;

Core-collapse supernovae are connected with formation of neutron stars. Part of the gravitation energy is transformed into the energy of the explosion, observed in SN II, SN Ib,c type supernovae. The mechanism of transformation is not…

Astrophysics · Physics 2007-05-23 G. S. Bisnovatyi-Kogan , S. G. Moiseenko , N. V. Ardeljan

We present results from three-dimensional (3-D) numerical simulations investigating the magnetohydrodynamics of cloud-wind interactions. The initial cloud is spherical while the magnetic field is uniform and transverse to the cloud motion.…

Astrophysics · Physics 2007-05-23 G. Gregori , Francesco Miniati , Dongsu Ryu , T. W. Jones

We present 2D results of simulations of the magnetorotational core collapsed supernova. For the first time we obtain strong explosion for the core collapsed supernova. In 2D approximation we show that amplification of the toroidal magnetic…

Astrophysics · Physics 2007-05-23 S. G. Moiseenko , G. S. Bisnovatyi-Kogan , N. V. Ardeljan

We studied the collapse of rotating molecular cloud cores with inclined magnetic fields, based on three-dimensional numerical simulations.The numerical simulations start from a rotating Bonnor-Ebert isothermal cloud in a uniform magnetic…

Astrophysics · Physics 2009-11-11 Masahiro N. Machida , Tomoaki Matsumoto , Tomoyuki Hanawa , Kohji Tomisaka

We present results from two-dimensional numerical simulations of the interactions between magnetized shocks and radiative clouds. Our primary goal is to characterize the dynamical evolution of the shocked clouds. We perform runs in both the…

Astrophysics · Physics 2009-11-10 P. Chris Fragile , Peter Anninos , Kyle Gustafson , Stephen D. Murray

If the angular momentum of the molecular cloud core were conserved during the star formation process, a new-born star would rotate much faster than its fission speed. This constitutes the angular momentum problem of new-born stars. In this…

Astrophysics · Physics 2009-10-31 Kohji Tomisaka

The idea of the magnetorotational explosion mechanism is that the energy of rotation of the neutron star formed in the course of a collapse is transformed into the energy of an expanding shock wave by means of a magnetic field. In the…

High Energy Astrophysical Phenomena · Physics 2019-04-01 G. S. Bisnovatyi-Kogan , S. G. Moiseenko , N. V. Ardelyan

We discuss results of 2D simulations of magnetorotational(MR) mechanism of core collapse supernova explosions. Due to the nonuniform collapse the collapsed core rotates differentially. In the presence of initial poloidal magnetic field its…

Astrophysics · Physics 2009-06-23 S. G. Moiseenko , G. S. Bisnovatyi-Kogan

Magnetorotational turbulence draws its energy from gravity and ultimately releases it via dissipation. However, the quantitative details of this energy flow have not been assessed for global disk models. In this work we examine the…

High Energy Astrophysical Phenomena · Physics 2015-06-18 E. R. Parkin

The collapse of the magnetic rotating protostellar cloud with mass of $10\,M_{\odot}$ is numerically studied. The initial ratios of the thermal, magnetic, and rotational energies of the cloud to the modulus of its gravitational energy are…

Solar and Stellar Astrophysics · Physics 2022-10-25 Natalya S. Kargaltseva , Sergey A. Khaibrakhmanov , Alexander E. Dudorov , Andrey G. Zhilkin

The diffusion of astrophysical magnetic fields in conducting fluids in the presence of turbulence depends on whether magnetic fields can change their topology via reconnection in highly conducting media. Recent progress in understanding…

Astrophysics of Galaxies · Physics 2012-12-17 R. Santos-Lima , A. Lazarian , E. M. de Gouveia Dal Pino , J. Cho

We study the rotational properties of magnetized and self-gravitating molecular cloud cores formed in 2 very high resolution 3D molecular cloud simulations.The simulations have been performed using the code RAMSES at an effective resolution…

Subsequent to Paper I, the evolution and fragmentation of a rotating magnetized cloud are studied with use of three-dimensional MHD nested-grid simulations. After the isothermal runaway collapse, an adiabatic gas forms a protostellar first…

Astrophysics · Physics 2009-11-13 Masahiro N Machida , Tomoaki Matsumoto , Tomoyuki Hanawa , Kohji Tomisaka

A 3D simulation of a non-relativistic, magnetically driven jet propagating in a stratified atmosphere is presented, covering about three decades in distance and two decades in sideways expansion. The simulation captures the jet acceleration…

High Energy Astrophysical Phenomena · Physics 2015-05-13 R. Moll
‹ Prev 1 2 3 10 Next ›