Zobrazeno 1 - 10
of 944
pro vyhledávání: '"Ogilvie, G"'
Autor:
Zhang, L.J., Shannon, K., Tibashoboka, D., Ogilvie, G., Pick, N., Kestler, M., Logie, C., Udall, B., Braschel, M., Deering, K.N.
Publikováno v:
In Sexual & Reproductive Healthcare December 2021 30
Autor:
Vanon, R., Ogilvie, G. I.
Publikováno v:
MNRAS 463, 3725-3736 (2016)
We conduct a linear stability calculation of an ideal Keplerian flow on which a sinusoidal zonal flow is imposed. The analysis uses the shearing sheet model and is carried out both in isothermal and adiabatic conditions, with and without self-gravity
Externí odkaz:
http://arxiv.org/abs/1609.02459
Jets, from the protostellar to the AGN context, have been extensively studied but their connection to the turbulent dynamics of the underlying accretion disc is poorly understood. Following a similar approach to Lesur et al. (2013), we examine the ro
Externí odkaz:
http://arxiv.org/abs/1608.08557
Publikováno v:
A&A 598, A87 (2017)
In Keplerian accretion disks, turbulence and magnetic fields may be jointly excited through a subcritical dynamo process involving the magnetorotational instability (MRI). High-resolution simulations exhibit a tendency towards statistical self-organi
Externí odkaz:
http://arxiv.org/abs/1607.02903
Publikováno v:
A&A 575, A14 (2015)
The magnetorotational (MRI) dynamo has long been considered one of the possible drivers of turbulent angular momentum transport in astrophysical accretion disks. However, various numerical results suggest that this dynamo may be difficult to excite i
Externí odkaz:
http://arxiv.org/abs/1410.3406
We perform one of the first studies into the nonlinear evolution of tidally excited inertial waves in a uniformly rotating fluid body, exploring a simplified model of the fluid envelope of a planet (or the convective envelope of a solar-type star) su
Externí odkaz:
http://arxiv.org/abs/1401.0643
Magnetorotational dynamo action in Keplerian shear flow is a three-dimensional, nonlinear magnetohydrodynamic process whose study is relevant to the understanding of accretion and magnetic field generation in astrophysics. Transition to this form of
Externí odkaz:
http://arxiv.org/abs/1306.3374
The nature of dynamo action in shear flows prone to magnetohydrodynamic instabilities is investigated using the magnetorotational dynamo in Keplerian shear flow as a prototype problem. Using direct numerical simulations and Newton's method, we comput
Externí odkaz:
http://arxiv.org/abs/1109.1811
Autor:
Barker, A. J., Ogilvie, G. I.
Internal gravity waves are excited at the interface of convection and radiation zones of a solar-type star by the tidal forcing of a short-period planet. The fate of these waves as they approach the centre of the star depends on their amplitude. We d
Externí odkaz:
http://arxiv.org/abs/1102.0861
Autor:
Lesur, G., Ogilvie, G. I.
The mechanism of angular momentum transport in accretion discs has long been debated. Although the magnetorotational instability appears to be a promising process, poorly ionized regions of accretion discs may not undergo this instability. In this le
Externí odkaz:
http://arxiv.org/abs/1002.4621