The r process and multi-messenger astronomy*

Detangling the origins of the heaviest elements via rapid neutron capture (r-process) nucleosynthesis remains an outstanding problem in nuclear astrophysics. Potential and observed multi-messenger signals such as gamma rays, neutrinos, and kilonovae can provide unprecedented insight into r-process candidate events. However, their interpretation is subject to considerable uncertainties in the nuclear physics of exotic nuclear species. Here we will explore the role of nuclear physics in shaping multi-messenger observables and highlight future opportunities, including those enabled by new radioactive beam facilities such as the N=126 Factory and the Facility for Rare Isotope Beams.