Numerical Simulations of Double White Dwarf Mergers

Details Numerical Simulations of Double White Dwarf Mergers Numerical Simulations of Double White Dwarf Mergers

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.1907m&link_type=abstract

American Astronomical Society, HEAD meeting #11, #19.07; Bulletin of the American Astronomical Society, Vol. 41, p.690

Astronomy and Astrophysics

Astrophysics

Scientific paper

We will present evolutions of white dwarf binaries from two independent codes (one SPH and one Eulerian). We attempt to match the initial data for semi-detached synchronously rotating binaries between these two fluid representations. Our set of simulations includes various initial mass ratios and we assume one of two different equations of state (polytropic or ideal gas) to span the parameter space between the two possible extreme cases of rapid, catastrophic merger through to long-lived, steady mass transfer. In this presentation, we will primarily highlight the level of agreement between the two codes and how the results vary with increasing numerical resolution. We will also discuss future work incorporating nuclear reactions into our simulations and the possible connections of double white dwarf mergers to astrophysical sources.

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