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80 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…
On the Importance of the Convective Urca Process in 3D Simulations of a Simmering White Dwarf
Ferran Poca-Amorós, Brendan Boyd, Dean M. Townsley +1
Type Ia supernovae are bright thermonuclear explosions that are important to numerous areas of astronomy. However, the origins of these events are poorly understood. One proposed s…
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…
3D Convective Urca Process in a Simmering White Dwarf
Brendan Boyd, Alan Calder, Dean Townsley +1
A proposed setting for thermonuclear (Type Ia) supernovae is a white dwarf that has gained mass from a companion to the point of carbon ignition in the core. In the early stages of…