Tag Archive for 'Subhalo'

GD-1 exhibits spur and gap structures that may result from a close encounter with a dense substructure. Image credit: University of California, Riverside.

Study: GD-1 Stellar Stream’s Distinctive Features Caused by Self-Interacting Dark Matter Subhalo

Jan 7, 2025 by News Staff

A core-collapsing self-interacting dark matter subhalo is responsible for the peculiar spur and gap features observed in GD-1, a stellar stream within...