148 citations · 532 across the 6 of their papers we have counts for
9 papers
Dynamical Friction of Double Perturbers in a Gaseous Medium
Hyosun Kim, Woong-Tae Kim, F. J. Sanchez-Salcedo
In many astrophysical situations, as in the coalescence of supermassive black hole pairs at gas rich galactic nuclei, the dynamical friction experienced by an object is a combinati…
Galactic Spiral Shocks with Thermal Instability
Chang-Goo Kim, Woong-Tae Kim, Eve C. Ostriker
Using one-dimensional hydrodynamic simulations including interstellar heating, cooling, and thermal conduction, we investigate nonlinear evolution of gas flow across galactic spira…
Physical Properties of Tidal Features in Interacting Disk Galaxies
Sang Hoon Oh, Woong-Tae Kim, Hyung Mok Lee +1
We explore tidal interactions of a galactic disk with Toomre parameter Q ~ 2 embedded in rigid halo/bulge with a point mass companion moving in a prescribed parabolic orbit. Tidal…
Heating and Turbulence Driving by Galaxy Motions in Galaxy Clusters
Woong-Tae Kim
Using three-dimensional hydrodynamic simulations, we investigate heating and turbulence driving in an intracluster medium (ICM) by orbital motions of galaxies in a galaxy cluster.…
Dynamical Friction of a Circular-Orbit Perturber in a Gaseous Medium
Hyosun Kim, Woong-Tae Kim
We investigate the gravitational wake due to, and dynamical friction on, a perturber moving on a circular orbit in a uniform gaseous medium using a semi-analytic method. This work…
Formation of Spiral-Arm Spurs and Bound Clouds in Vertically Stratified Galactic Gas Disks
Woong-Tae Kim, Eve C. Ostriker
(Abridged) We investigate the growth of spiral-arm substructure in vertically stratified, self-gravitating, galactic gas disks, using local numerical MHD simulations. Our new model…