Zobrazeno 1 - 10
of 687
pro vyhledávání: '"Lovelace, R."'
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's orbit is aligned with the equatorial plane of the disc, the eccentri
Externí odkaz:
http://arxiv.org/abs/2406.18834
Autor:
Romanova, M. M., Koldoba, A. V., Ustyugova, G. V., Blinova, A. A., Lai, D., Lovelace, R. V. E.
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 are tilted about the rotational axis of the disc. We observed that in
Externí odkaz:
http://arxiv.org/abs/2012.10826
Autor:
Romanova, M. M., Lii, P. S., Koldoba, A. V., Ustyugova, G. V., Blinova, A. A., Lovelace, R. V. E., Kaltenegger, L.
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 three-dimensional (3D) simulations of planet migration at the disc-cavit
Externí odkaz:
http://arxiv.org/abs/1809.04013
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 polar-type star, where the magnetic field is relatively weak and an ac
Externí odkaz:
http://arxiv.org/abs/1804.10105
Many pulsars propagate through the interstellar medium (ISM) with supersonic velocities, and their pulsar winds interact with the interstellar medium (ISM), forming bow shocks and magnetotails (PWN). We model the propagation of pulsars through the in
Externí odkaz:
http://arxiv.org/abs/1803.06240
We investigate the migration of low-mass planets ($5 M_{\oplus}$ and $20 M_{\oplus}$) in accretion discs threaded with a magnetic field using 2D MHD code in polar coordinates. We observed that, in the case of a strong azimuthal magnetic field where t
Externí odkaz:
http://arxiv.org/abs/1508.03241
Autor:
Koldoba, A. V., Ustyugova, G. V., Lii, P. S., Comins, M. L., Dyda, S., Romanova, M. M., Lovelace, R. V. E.
We describe a Godunov-type magnetohydrodynamic (MHD) code based on the Miyoshi and Kusano (2005) solver which can be used to solve various astrophysical hydrodynamic and MHD problems. The energy equation is in the form of entropy conservation. The co
Externí odkaz:
http://arxiv.org/abs/1508.00003
Publikováno v:
MNRAS, Volume 459, p.2354, 2016
We present a study of the Rayleigh-Taylor unstable regime of accretion onto rotating magnetized stars in a set of high grid resolution three-dimensional (3D) magnetohydrodynamic (MHD) simulations performed in low-viscosity discs. We find that the bou
Externí odkaz:
http://arxiv.org/abs/1501.01948
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Aug2024, Vol. 532 Issue 3, p3509-3525, 17p
Autor:
Lovelace, R. V. E., Romanova, M. M.
Publikováno v:
Fluid Dynamics Research 46 (2014) 041401 (IOP Publishing: The Japan Society of Fluid Mechanics)
A brief review is given of the Rossby wave instability (RWI) in astrophysical discs. In non-self-gravitating discs, around for example a newly forming stars, the instability can be triggered by an axisymmetric bump at some radius $r_0$ in the disc su
Externí odkaz:
http://arxiv.org/abs/1312.4572