Inside the mysterious collapse of dark matter halos

Two physicists at the Perimeter Institute have developed a computational tool called KISS-SIDM to study self-interacting dark matter, which can collide with itself and trigger collapses within dark matter halos. Their breakthrough bridges a critical gap in simulation methods, allowing researchers to accurately model intermediate density ranges where existing approaches failed. The faster code can run on laptops rather than expensive computing clusters, opening doors to explore new dark matter physics and potentially observable signatures including connections to black hole formation.