Where has all the $r$-process gone? Timescales for GRB-Kilonovae to Enrich their Host Galaxies

Anya E. Nugent, Alexander P. Ji, Wen-fai Fong +2

Neutron star (NS) mergers are currently the only observed source of $r$-process production in the Universe. Yet, it is unclear how much $r$-process mass from these mergers is incor…