Constructing Synchronously Rotating Double White Dwarf Binaries

Abstract

We have developed a self-consistent-field technique similar to the one described by Hachisu, Eriguchi, & Nomoto (1986b) that can be used to construct detailed force-balanced models of synchronously rotating, double white dwarf (DWD) binaries that have a wide range of total masses, mass ratios, and separations. In addition to providing a computational tool that can be used to provide quiet initial starts for dynamical studies of the onset of mass transfer in DWD systems, we show that this SCF technique can be used to construct model sequences that mimic the last portion of the detached inspiral phase of DWD binary evolutions, and semi-detached model sequences that mimic a phase of conservative mass transfer.

51 pages, 10 figures, submitted for publication in Astrophysical Journal Supplement Series

References in corpus (6)

• Remnant evolution after a carbon-oxygen white dwarf merger
• Very Large Excesses of 18O in Hydrogen-Deficient Carbon and R Coronae Borealis Stars: Evidence for White Dwarf Mergers
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• The role of dredge-up in double white dwarf mergers
• Preparing for HPC on RISC-V: Examining Vectorization and Distributed Performance of an Astrophyiscs Application with HPX and Kokkos
• Numerical Simulations of Mass Transfer in Binaries with Bipolytropic Components
• Quark-Novae in Neutron Star-White-Dwarf Binaries: A model for luminous (spin-down powered) sub-Chandrasekhar-mass Type Ia Supernovae ?
• A Numerical Method for Studying Super-Eddington Mass Transfer in Double White Dwarf Binaries
• A Hybrid Advection Scheme for Conserving Angular Momentum on a Refined Cartesian Mesh
• Hydrodynamic simulations of WD-WD mergers and the origin of RCB stars
• Halted-Pendulum Relaxation: Application to White Dwarf Binary Initial Data