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astro-ph.CO2026
Efficient numerical evolution of self-gravitating systems with dark-matter-baryon scattering
Marc Kamionkowski, Vera Gluscevic, Kris Sigurdson
We present a fast algorithm to numerically evolve a spherically symmetric system consisting of dark matter and gas, including dark-matter-baryon scattering. The method augments the…
astro-ph.CO2025
Gravothermal collapse of self-interacting dark-matter halos with anisotropic velocity distributions
Marc Kamionkowski, Kris Sigurdson
Self-gravitating galactic halos composed of self-interacting dark matter exhibit the formation of a highly dense core at the galactic center--a gravothermal collapse. Analytic mode…
astro-ph.CO2025
Numerical evolution of self-gravitating halos of self-interacting dark matter
Marc Kamionkowski, Kris Sigurdson, Oren Slone
We discuss a modification of a recently developed numerical scheme for evolving spherically symmetric self-gravitating systems to include the effects of self-interacting dark matte…