TangoSIDM: Tantalizing models of Self-Interacting Dark Matter

Understand

We introduce the TangoSIDM project, a suite of cosmological simulations of structure formation in a $\Lambda$-Self-Interacting Dark Matter (SIDM) universe.

• TangoSIDM explores the impact of large dark matter (DM) scattering cross sections over dwarf galaxy scales.
• Motivated by DM interactions that follow a Yukawa potential, the cross section per unit mass, $\sigma/m_{\chi}$, assumes a velocity dependent form that avoids violations of current constraints on large scales.
• We demonstrate that our implementation accurately models not only core formation in haloes, but also gravothermal core collapse.