7 papers
Stream-Driven Ignition of a Realistic Undisturbed Helium Shell on a White Dwarf
Nethra Rajavel, Dean M. Townsley, Ken J. Shen
The dynamically driven double degenerate double detonation (D) model has emerged as a promising progenitor scenario for Type Ia supernovae. In this model, a carbon-oxygen white…
Simulating the Convective Urca Process with Multiple Urca Pairs in a Simmering White Dwarf
Brendan Boyd, Ferran Poca-Amorós, Alan Calder +1
Type Ia supernovae are bright thermonuclear explosions of one or more white dwarf stars. The exact origin and explosion mechanism for these supernovae is still poorly understood. I…
Relationship Between Major Stellar Physical Parameters and Normal Mode Frequencies in Accreting White Dwarf Stars
Praphull Kumar, Dean M. Townsley, Hunter Anz
White dwarfs (WDs) are the final fate of about 97\% of the stars in our galaxy, making them vital tracers of stellar history. A fraction of WDs exist in cataclysmic variable (CV) s…
Unified -mode and -mode Analysis of Accreting White Dwarf Stars
Praphull Kumar, Dean M. Townsley
Dwarf novae are a subset of cataclysmic variables that accrete material intermittently in short-duration outbursts with sometimes long quiescent intervals in between. During the qu…
Non-LTE Synthetic Observables of a Multidimensional Model of Type Ia Supernovae
Samuel J. Boos, Luc Dessart, Ken J. Shen +1
Many promising explosion models for the elusive origin of Type Ia supernovae (SNe Ia) ultimately fail to completely reproduce a number of observed properties of these events. One l…
Local two-dimensional simulations of the ignition of a helium shell detonation on a white dwarf by an impacting stream
Nethra Rajavel, Dean M. Townsley, Ken J. Shen
The double detonation model is one of the prevalent explosion mechanisms of Type Ia Supernovae (SNe Ia) wherein an outer helium shell detonation triggers a core detonation in the w…