456 citations · 8.7k across the 154 of their papers we have counts for
6 papers · 2 filters
Numerical Simulations Of Advective Flows Around Black Holes
Sandip K. Chakrabarti, D. Ryu, D. Molteni +3
We present fully time-dependent solutions of accretion processes on black holes and compare them with analytical solutions. We use Smoothed Particle Hydrodynamics and Total Variati…
Accreting Matter around Clusters of Galaxies: One-Dimensional Considerations
Dongsu Ryu, Hyesung Kang
During the formation of the large scale structure of the Universe, matter accretes onto high density peaks. Accreting collisionless dark matter (DM) forms caustics around them, whi…
The Protogalactic Origin for Cosmic Magnetic Fields
Russell M. Kulsrud, Renyue Cen, Jeremiah P. Ostriker +1
It is demonstrated that strong magnetic fields are produced from a zero initial magnetic field during the pregalactic era, when galaxies are first forming. Their development procee…
Zero Energy Rotating Accretion Flows near a Black Hole
Dongsu Ryu, Sandip K. Chakrabarti, Diego Molteni
We characterize the nature of thin, axisymmetric, inviscid, accretion flows of cold adiabatic gas with zero specific energy in the vicinity of a black hole by the specific angular…
The Magnetohydrodynamics of Supersonic Gas Clouds: MHD Cosmic Bullets and Wind-Swept Clumps
T. W. Jones, Dongsu Ryu, I. L. Tregillis
We report an extensive set of two-dimensional MHD simulations exploring the role and evolution of magnetic fields in the dynamics of supersonic plasma clumps. We examine the influe…
Numerical Simulations of Standing Shocks in Accretion Flows around Black Holes: A Comparative Study
Diego Molteni, Dongsu Ryu, Sandip K. Chakrabarti
We compare the results of numerical simulations of thin and quasi-spherical (thick) accretion flows with existing analytical solutions. We use a Lagrangian code based on the Smooth…