304 citations · 2.9k across the 37 of their papers we have counts for
38 papers
3D MHD simulations of planet migration in cavities and inner discs of magnetized stars
M. M. Romanova, A. V. Koldoba, G. V. Ustyugova +2
We investigate the Type I migration of planets in low-density cavities and inner discs of strongly magnetized young stars using global three-dimensional (3D) magnetohydrodynamic (M…
Eccentricity and Inclination of Massive Planets Inside Low-density Cavities: Results of 3D Simulations
M. M. Romanova, A. V. Koldoba, G. V. Ustyugova +2
We study the evolution of eccentricity and inclination of massive planets in low-density cavities of protoplanetary discs using three-dimensional (3D) simulations. When the planet'…
Eccentricity Growth of Massive Planets inside Cavities of Protoplanetary Discs
Marina M. Romanova, Alexander V. Koldoba, Galina V. Ustyugova +2
We carry out hydrodynamical simulations to study the eccentricity growth of a 1-30 Jupiter mass planet located inside the fixed cavity of a protoplanetary disc. The planet exchange…
3D MHD Simulations of Accretion onto Stars with Tilted Magnetic and Rotational Axes
M. M. Romanova, A. V. Koldoba, G. V. Ustyugova +3
We present results of global three-dimensional (3D) magnetohydrodynamic (MHD) simulations of accretion onto magnetized stars where both the magnetic and rotational axes of the star…
Modelling the interaction between relativistic and non-relativistic winds in binary pulsar systems: strong magnetization of the pulsar wind
Sergey V. Bogovalov, Dmitry Khangulyan, Alexander V. Koldoba +2
We present a numerical study of the properties of the flow produced by the collision of a magnetized anisotropic pulsar wind with the circumbinary environment. We focus on studying…
3D Simulations of Planet Trapping at Disc-Cavity Boundaries
M. M. Romanova, P. S. Lii, A. V. Koldoba +4
Inward migration of low-mass planets and embryos of giant planets can be stopped at the disc-cavity boundaries due to co-orbital corotation torque. We performed the first global th…
Comparisons of MHD Propeller Model with Observations of Cataclysmic Variable AE Aqr
A. A. Blinova, M. M. Romanova, G. V. Ustyugova +2
We have developed a numerical MHD model of the propeller candidate star AE Aqr using axisymmetric magneto-hydrodynamic (MHD) simulations. We suggest that AE Aqr is an intermediate…
On the anomalously large extension of the Pulsar Wind Nebula HESS J1825-137
Dmitry Khangulyan, Alexander V. Koldoba, Galina V. Ustyugova +2
The very high energy (VHE) gamma-ray emission reported from a number of pulsar wind nebulae (PWNe) is naturally explained by the inverse Compton scattering of multi-TeV electrons.…
Properties of Strong and Weak Propellers from MHD Simulations
Marina M. Romanova, Alisa A. Blinova, Galina V. Ustyugova +2
We investigate the properties of magnetized stars in the propeller regime using axisymmetric numerical simulations. We modelled the propeller regime for stars with realistically la…
Magnetic Field Amplification via Protostellar Disc Dynamos
Sergei Dyda, Richard V. E. Lovelace, Galina V. Ustyugova +2
We numerically investigate the generation of a magnetic field in a protostellar disc via an -dynamo and the resulting magnetohydrodynamic (MHD) driven outflows. We find that fo…
Asymmetric MHD Outflows/Jets from Accreting T Tauri Stars
Sergei Dyda, Richard V. E. Lovelace, Galina V. Ustyugova +3
Observations of jets from young stellar objects reveal the asymmetric outflows from some sources. A large set of D MHD simulations has been carried out for axisymmetric viscou…
Counter-Rotating Accretion Discs
Sergei Dyda, Richard V. E. Lovelace, Galina V. Ustyugova +2
Counter-rotating discs can arise from the accretion of a counter-rotating gas cloud onto the surface of an existing co-rotating disc or from the counter-rotating gas moving radiall…
MHD Simulations of Magnetospheric Accretion, Ejection and Plasma-field Interaction
M. M. Romanova, R. V. E. Lovelace, M. Bachetti +5
We review recent axisymmetric and three-dimensional (3D) magnetohydrodynamic (MHD) numerical simulations of magnetospheric accretion, plasma-field interaction and outflows from the…
Propeller outflows from an MRI disc
Patrick S Lii, Marina M. Romanova, Galina V. Ustyugova +2
We present the results of axisymmetric simulations of MRI-driven accretion onto a rapidly rotating, magnetized star accreting in the propeller regime. The stellar magnetosphere cor…
Warps, bending and density waves excited by rotating magnetized stars: results of global 3D MHD simulations
M. M. Romanova, G. V. Ustyugova, A. V. Koldoba +1
We report results of the first global three-dimensional magnetohydrodynamic simulations of the waves excited in an accretion disc by a rotating star with a dipole magnetic field mi…
MRI-driven Accretion on to Magnetized stars: Global 3D MHD Simulations of Magnetospheric and Boundary Layer Regimes
M. M. Romanova, G. V. Ustyugova, A. V. Koldoba +1
We discuss results of global 3D MHD simulations of accretion on to a rotating magnetized star with a tilted dipole magnetic field, where the accretion is driven by the magneto-rota…
Modelling interaction of relativistic and non-relativistic winds in binary system PSR B1259-63/SS2883 - II. Impact of magnetization and anisotropy of the pulsar wind
S. Bogovalov, D. Khangulyan, A. V. Koldoba +2
In this paper, we present a numerical study of the properties of the flow produced by the collision of a magnetized anisotropic pulsar wind with its environment in binary system. W…
MRI-driven Accretion onto Magnetized stars: Axisymmetric MHD Simulations
Marina M. Romanova, Galina V. Ustyugova, Alexander V. Koldoba +1
We present the first results of a global axisymmetric simulation of accretion onto rotating magnetized stars from a turbulent, MRI-driven disk. The angular momentum is transported…
One-sided Outflows/Jets from Rotating Stars with Complex Magnetic Fields
R. V. E. Lovelace, M. M. Romanova, G. V. Ustyugova +1
We investigate the generation of intrinsically asymmetric or {\it one-sided} outflows or jets from disk accretion onto rotating stars with complex magnetic fields using axisymmetri…
Launching of Conical Winds and Axial Jets from the Disk-Magnetosphere Boundary: Axisymmetric and 3D Simulations
M. M. Romanova, G. V. Ustyugova, A. V. Koldoba +1
We investigate the launching of outflows from the disk-magnetosphere boundary of slowly and rapidly rotating magnetized stars using axisymmetric and exploratory 3D magnetohydrodyna…
Launching of Jets by Propeller Mechanism
M. M. Romanova, R. V. E. Lovelace, G. V. Ustyugova +1
We carried out axisymmetric simulations of disk accretion to a rapidly rotating magnetized star in the "propeller" regime. Simulations show that propellers may be "weak" (with no o…
3D MHD Simulations of Disk Accretion onto Magnetized Stars: Numerical Approach and Sample Simulations
Marina M. Romanova, Alexander V. Koldoba, Galina V. Ustyugova +3
We present results of global 3D MHD simulations of disk accretion to a rotating star with dipole and more complex magnetic fields using a Godunov-type code based on the "cubed sphe…
Conical Winds from the Disk-Magnetosphere Boundary
M. M. Romanova, G. V. Ustyugova, A. V. Koldoba +1
A new type of wind - a conical wind - has been discovered in axisymmetric magnetohydrodynamic simulations of the disk-magnetosphere interaction in cases where the magnetic field of…
Oscillations of MHD shock waves on the surfaces of T Tauri stars
A. V. Koldoba, G. V. Ustyugova, M. M. Romanova +1
This work treats the matter deceleration in a magnetohydrodynamics radiative shock wave at the surface of a star. The problem is relevant to classical T Tauri stars where infalling…