Zobrazeno 1 - 10
of 483
pro vyhledávání: '"Zhu, Zhaohuan"'
Using controlled injection and recovery experiments, we devised an analysis prescription to assess the quality of dynamical measurements of protoplanetary disk gas masses based on resolved (CO) spectral line data, given observational limitations (res
Externí odkaz:
http://arxiv.org/abs/2405.19574
Turbulence is crucial for protoplanetary disk dynamics, and Vertical Shear Instability (VSI) is a promising mechanism in outer disk regions to generate turbulence. We use Athena++ radiation module to study VSI in full and transition disks, accounting
Externí odkaz:
http://arxiv.org/abs/2404.05608
Recent high-angular resolution ALMA observations have revealed rich information about protoplanetary disks, including ubiquitous substructures and three-dimensional gas kinematics at different emission layers. One interpretation of these observations
Externí odkaz:
http://arxiv.org/abs/2403.18292
The majority of stars are in binary/multiple systems. How such systems form in turbulent, magnetized cores of molecular clouds in the presence of non-ideal MHD effects remains relatively under-explored. Through ATHENA++-based non-ideal MHD AMR simula
Externí odkaz:
http://arxiv.org/abs/2403.07777
The streaming instability, a promising mechanism to drive planetesimal formation in dusty protoplanetary discs, relies on aerodynamic drag naturally induced by the background radial pressure gradient. This gradient should vary in disks, but its effec
Externí odkaz:
http://arxiv.org/abs/2401.10430
Autor:
Childs, Anna C., Martin, Rebecca G., Nixon, C. J., Geller, Aaron M., Lubow, Stephen H., Zhu, Zhaohuan, Lepp, Stephen
We study the effects of general relativity (GR) on the evolution and alignment of circumbinary disks around binaries on all scales. We implement relativistic apsidal precession of the binary into the hydrodynamics code {\sc phantom}. We find that the
Externí odkaz:
http://arxiv.org/abs/2312.09495
The discovery of planetary systems beyond our solar system has challenged established theories of planetary formation. Planetary orbits display a variety of unexpected architectures, and free-floating planets appear ubiquitous. The recent detection o
Externí odkaz:
http://arxiv.org/abs/2310.06016
Autor:
Bailey, Avery, Zhu, Zhaohuan
The hydrodynamic exchange of a protoplanet's envelope material with the background protoplanetary disk has been proposed as one mechanism to account for the diversity of observed planet envelopes which range in mass fractions of ~1% for super-Earths
Externí odkaz:
http://arxiv.org/abs/2310.03117
Disc warping, and possibly disc breaking, has been observed in protoplanetary discs around both single and multiple stars. Large disc warps can break the disc, producing observational signatures in kinematics and shadowing along the outer disc. In th
Externí odkaz:
http://arxiv.org/abs/2310.00459
Recent observations of changing-look active galactic nuclei (AGN) hint at a frequency of accretion activity not fully explained by tidal disruption events (TDEs) stemming from relaxation processes in nucleus star clusters (NSCs), traditionally estima
Externí odkaz:
http://arxiv.org/abs/2310.00038