4 papers · 1 filter
The Evolution of Supernovae in the Winds of Massive Stars
Vikram Dwarkadas
We study the evolution of supernova remnants in the circumstellar medium formed by mass loss from the progenitor star. The properties of this interaction are investigated, and the…
Simulation of Vortex--Dominated Flows Using the FLASH Code
Vikram Dwarkadas, Tomek Plewa, Greg Weirs +2
We compare the results of two--dimensional simulations to experimental data obtained at Los Alamos National Laboratory in order to validate the FLASH code. FLASH is a multi--physic…
Stellar Rotation and the Formation of Asymmetric Nebulae
Vikram V. Dwarkadas
We illustrate how rotation of the central star can give rise to latitudinal variations in the wind properties from the star. Interaction of these winds with the surrounding medium…
Instabilities and the Formation of Small-Scale Structures in Planetary Nebulae
Vikram Dwarkadas
Recent observations have revealed the presence of a variety of small-scale ``micro-structures'' in Planetary Nebulae images. I discuss numerical hydrodynamics models of planetaries…