239 citations · 283 across the 7 of their papers we have counts for
7 papers
Hot accretion flow around neutron stars
De-Fu Bu, Er-Lin Qiao, Xiao-Hong Yang
We perform as the first time hydrodynamic simulations to study the properties of hot accretion flow (HAF) around a neutron star (NS). The energy carried by the HAF will eventually…
What is the real accretion rate onto a black hole for low angular momentum accretion?
De-Fu Bu, Xiao-Hong Yang
Mass accretion rate is a key parameter in accretion disk theory. It determines black hole accretion mode. In large scale cosmological simulations studying galaxy formation and evol…
Quenching black hole accretion by active galactic nuclei feedback
De-Fu Bu, Xiao-Hong Yang
Observations of many dim galactic nuclei in local universe give good estimation of gas density and temperature at Bondi radius. If we assume the black hole accretes at Bondi accret…
Numerical Simulation of Hot Accretion Flows (III): Revisiting wind properties using trajectory approach
Feng Yuan, Zhaoming Gan, Ramesh Narayan +3
Previous MHD simulations have shown that wind must exist in black hole hot accretion flows. In this paper, we continue our study by investigating the detailed properties of wind, s…
Formation of Isothermal Disks around Protoplanets. I. Introductory Three-Dimensional Global Simulations for Sub-Neptune-Mass Protoplanets
Hsiang-Hsu Wang, Defu Bu, Hsien Shang +1
The regular satellites found around Neptune ($\approx 17~M_{\Earth}$) and Uranus ($\approx 14.5~M_{\Earth}$) suggest that past gaseous circumplanetary disks may have co-existed wit…
Does the circularization radius exist or not for low angular momentum accretion?
De-Fu Bu, Feng Yuan
If the specific angular momentum of accretion gas at large radius is small compared to the local Keplerian value, one usually believes that there exists a "circularization radius"…