A new theory from researchers at the Purple Mountain Observatory suggests that dark matter may consist of at least two different types of particles that segregate by mass, potentially explaining various cosmic phenomena that have puzzled astronomers, such as the densities of dark matter in dwarf galaxies and the behavior of gravitational lensing. This "two component self-interacting dark matter" model could provide a unified understanding of these observations as future astronomical surveys become more precise.
The new "two component self interacting dark matter" theory posited by researchers at the Purple Mountain Observatory suggests that dark matter consists of at least two types of particles with different masses. This model explains several cosmic phenomena, such as the diffuse nature of dwarf galaxies and dense dark matter clumps through gravitational lensing, by proposing that heavier particles drift toward galaxy centers while lighter ones spread outward. This theory, supported by high-resolution simulations, offers a unified explanation for previously conflicting astronomical observations and provides a compelling direction for future research in dark matter physics.