2 citations · 2 across the 3 of their papers we have counts for
13 papers
Hydrodynamic Turbulence in Accretion Disks
Banibrata Mukhopadhyay, Niayesh Afshordi, Ramesh Narayan
Turbulent viscosity in cold accretion disks is likely to be hydrodynamic in origin. We investigate the growth of hydrodynamic perturbations in a small region of a disk, which we mo…
Evidence for the Black Hole Event Horizon
Ramesh Narayan
Astronomers have discovered many candidate black holes in X-ray binaries and in the nuclei of galaxies. The candidate objects are too massive to be neutron stars, and for this reas…
On the Minimum Energy Configuration of a Rotating Barotropic Fluid
Ramesh Narayan, James E. Pringle
In a recent paper (astro-ph/0207561, posted on July 25, 2002), Fromang & Balbus state that ``a uniformly rotating barotropic fluid in an external potential attains a true energy mi…
Thermal Conduction and the Stability of Hot Accretion Flows
Mikhail V. Medvedev, Ramesh Narayan
Recently, Medvedev & Narayan (2001) discovered a new type of accretion flow, a hot settling flow around a rapidly rotating neutron star. The flow is cooling-dominated and energetic…
Astrophysical Evidence for Black Hole Event Horizons
Kristen Menou, Eliot Quataert, Ramesh Narayan
Astronomers have discovered many potential black holes in X-ray binaries and galactic nuclei. These black holes are usually identified by the fact that they are too massive to be n…
Advection-Dominated Accretion around Black Holes
Ramesh Narayan, Rohan Mahadevan, Eliot Quataert
This article reviews the physics of advection-dominated accretion flows (ADAFs) and describes applications to several black hole X-ray binaries and galactic nuclei. The possibility…