PRESENT BY DISTURBANCE. “A DM sub-halo passing by a stellar stream gives the stars in the stream a kick and perturbs their orbits, leading to a gap in the stream which is observable for sub-halo masses.” (DM = dark matter).
https://lnkd.in/e6ifiQMn
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022