Neutron Star-Main Sequence Collisions Robustly Form Dynamically Stable Thorne-Żytkow Objects
arXiv:2510.16129 · doi:10.3847/1538-4357/ae100d
Abstract
Thorne-Żytkow Objects (TŻOs) are hypothetical hybrid stars with a neutron star at the core of a large, diffuse envelope. (TŻOs) may be formed when a newly formed neutron star that is kicked by its supernova collides with its main-sequence companion. Using a moving-mesh hydrodynamics solver integrated into the parallel-code Charm N-body GrAvity solver, we demonstrate that these ``impact scenario'' formation processes robustly form (TŻOs) for periastron distances less than one stellar radius. These (TŻOs) are dynamically stable and they can serve as initial models for further evolutionary studies.
Accepted for publication in The Astrophysical Journal (2025). This version corresponds to the accepted manuscript prior to final copyediting and typesetting by ApJ