Exploring the migration of magic numbers in neutron-rich systems via knockout reactions

Magic numbers are the backbone of the nuclear structure, serving as the basis for shell-model truncations, leading to the prediction of the island of stability, and linking to peaks in the solar-system abundance curve. Canonical nuclear magic numbers include 2, 8, 20, 28, 50, 82, and 126. It is now well established that these magic numbers are not universal over the nuclear landscape. This paper presents a brief review of recent highlights on the migration of magic numbers in neutron-rich nuclei, with particular emphasis on results obtained from knockout reactions. We focus on two key regions: 1) the loss of magicity at N = 20 and 28, and 2) the emergence of new magic numbers at N = 32, 34. Prospects for future measurements in these regions, enabled by new detection systems at upgraded and new facilities, are also discussed.