A magnetar powers the luminous supernova 2023pel, which is associated with a long gamma-ray burst L. M. Roman Aguilar, M. M. Saez, K. Ertini and M. C. Bersten A&A, 698 (2025) A78 Published online: 29 May 2025 DOI: 10.1051/0004-6361/202452788