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pro vyhledávání: '"Miranda, Ryan"'
Gravitational coupling between planets and protoplanetary discs is responsible for many important phenomena such as planet migration and gap formation. The key quantitative characteristics of this coupling is the excitation torque density -- the torq
Externí odkaz:
http://arxiv.org/abs/2306.07341
Autor:
Miranda, Ryan, Rafikov, Roman R.
Many protoplanetary disks exhibit annular gaps in dust emission, which may be produced by planets. Simulations of planet-disk interaction aimed at interpreting these observations often treat the disk thermodynamics in an overly simplified manner, whi
Externí odkaz:
http://arxiv.org/abs/2007.13766
High spatial resolution observations of protoplanetary disks (PPDs) by ALMA have revealed many details that are providing interesting constraints on the disk physics as well as dust dynamics, both of which are essential for understanding planet forma
Externí odkaz:
http://arxiv.org/abs/2001.06986
Autor:
Miranda, Ryan, Rafikov, Roman R.
Gravitational coupling between young planets and their parent disks is often explored using numerical simulations, which typically treat the disk thermodynamics in a highly simplified manner. In particular, many studies adopt the locally isothermal a
Externí odkaz:
http://arxiv.org/abs/1911.01428
We carry out 2D viscous hydrodynamics simulations of circumbinary disk (CBD) accretion using {\footnotesize AREPO}. We resolve the accretion flow from a large-scale CBD down to the streamers and disks around individual binary components. Extending ou
Externí odkaz:
http://arxiv.org/abs/1910.04763
Autor:
Miranda, Ryan, Rafikov, Roman R.
It has been recently suggested that the multiple concentric rings and gaps discovered by ALMA in many protoplanetary disks may be produced by a single planet, as a result of the complex propagation and dissipation of the multiple spiral density waves
Externí odkaz:
http://arxiv.org/abs/1905.08259
Autor:
Miranda, Ryan, Rafikov, Roman R.
Recent observations of protoplanetary disks, as well as simulations of planet-disk interaction, have suggested that a single planet may excite multiple spiral arms in the disk, in contrast to the previous expectations based on linear theory (predicti
Externí odkaz:
http://arxiv.org/abs/1811.09628
We carry out 2D viscous hydrodynamical simulations of circumbinary accretion using the AREPO code. We self-consistently compute the accretion flow over a wide range of spatial scales, from the circumbinary disk (CBD) far from the central binary, thro
Externí odkaz:
http://arxiv.org/abs/1810.04676
Autor:
Miranda, Ryan, Rafikov, Roman R.
Spectroscopic observations of some metal-rich white dwarfs (WDs), believed to be polluted by planetary material, reveal the presence of compact gaseous metallic disks orbiting them. The observed variability of asymmetric, double-peaked emission line
Externí odkaz:
http://arxiv.org/abs/1802.00464
Autor:
Miranda, Ryan, Lai, Dong
We investigate the migration of a low-mass ($\lesssim 10 M_\oplus$) planet near the inner edge of a protoplanetary disc using two-dimensional viscous hydrodynamics simulations. We employ an inner boundary condition representing the truncation of the
Externí odkaz:
http://arxiv.org/abs/1708.07872