Quasi-star MESA Models - Refining Boundary Conditions, Implementing Envelope Accretion

Quasi-stars are a promising supermassive blackhole progenitor as an extension of direct collapse. We have created new models of these exotic stars, using MESA, where we implement new envelope accretion schemes and boundary conditions. These modifications allow us to understand the range of black hole seed masses that may form under stable quasi-star conditions. In addition, new boundary conditions allow us to both have a more accurate calculation of these masses and to further understand the internal structure of these stars.