Unveiling the Secrets of Dark Matter: From Enigmas to Identity

Researchers from the University of California Riverside propose an alternative theory to the prevailing cold dark matter theory (CDM) called Self-Interacting Dark Matter (SIDM). They suggest that dark matter particles may interact with each other, explaining the extreme density and diffusion of dark matter halos observed in galaxies. SIDM allows for the collision and transfer of heat between particles, resulting in the expansion of dark matter and the formation of diffuse halos. Additionally, SIDM supports the formation of dense dark matter halos that can affect gravitational lensing. The study highlights the need for further research and direct detection methods to unravel the mysteries of dark matter.