Limits on the ejecta mass during the search for kilonovae associated with neutron star-black hole mergers: A case study of S230518h, GW230529, S230627c and the low-significance candidate S240422ed

Published in Phys.Rev.D 112, 2025

We use electromagnetic follow-up observations on neutron star-black hole merger candidates to provide limits on the ejecta masses of their kilonovae.