Simulating Binary Hybrid Star Mergers Remnants: How Deconfinement Phase Transitions effect Fluid Instabilities

Goal: To understand how deconfinement phase-transitions effect the evolution of non-axisymmetric fluid instabilities in post-merger remnants.

Method: We ran GRHD simulations of differentially rotating stars with the potential to model post merger remnants. We created a few models with varying degrees of differential rotation, as well as mirror models but using an EOS that does not allow for a 'free-quarks' composition to develop.

Analysis: Although the simulation movies have proved interesting within a certain range of model stability, the gravitational waves produced by these instabilities provide a lot more information.

Resources: CompOSE EOS: https://compose.obspm.fr/ hybrid (quark-hadron) model: https://compose.obspm.fr/table/fam%3D3/part%3D2#

StellarCollapseEOS https://stellarcollapse.org/index.php/microphysics.html

Cactus/Einstein Toolkit modules (called "Thorns") we use for 3D stellar collapse and core-collapse supernova simulations. https://www.einsteintoolkit.org/ https://stellarcollapse.org/Zelmani.html