Wednesday, May 1, 2013

1304.8048 (Rachid Ouyed et al.)

Explosive Combustion of a Neutron Star into a Quark Star: the non-premixed scenario    [PDF]

Rachid Ouyed, Brian Niebergal, Prashanth Jaikumar
We review aspects of the hydrodynamical combustion of nuclear matter to strange quark matter in a neutron star. Numerical studies on non-premixed combustion that consistently include hydrodynamical flows in a reactive-diffusive setup show that in 1D, the conversion (burning) front moves at sub-sonic speeds and stops short of converting the entire star to SQM, essentially due to advective forces. However, in the process, we also find that neutrino cooling of the interface causes it to wrinkle, laying a platform for a deflagrative-to-detonative transition (DDT). We outline progress on improvements in the burning code (Burn-UD: http://quarknova.ucalgary.ca/software/Burn-UD/) that will ultimately reveal the mechanism that can explode the outermost layers of even a dense compact object like a neutron star.
View original: http://arxiv.org/abs/1304.8048

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