Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.9403z&link_type=abstract
American Astronomical Society, 200th AAS Meeting, #94.03; Bulletin of the American Astronomical Society, Vol. 34, p.955
Astronomy and Astrophysics
Astronomy
1
Scientific paper
We look at localized helium burning in the accreted fuel layer of a non-rotating neutron star. The pressure at the base of the accreted fuel layer is large and the material is only partially degenerate. Any temperature perturbations and resulting pressure gradients will lead to enormous accelerations (both laterally and vertically) of the material in the fuel layer. If the burning cannot proceed more rapidly than the spreading of this temperature perturbation, then localized burning cannot take place, and it is likely that the ignition would have to proceed simultaneously throughout the envelope. We present some initial multidimensional simulations of pointwise burning in a helium atmosphere on a neutron star. Support for this work was provided by the Scientific Discovery through Advanced Computing (SciDAC) program of the DOE, grant number DE-FC02-01ER41176.
Calder Alan C.
Cumming Alan
Dursi Jonathan L.
Fryxell Bruce A.
Olson Kevin
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