NICER observations of type-I X-ray bursts from the ultra-compact X-ray binary M15 X-2 María Alejandra Díaz Teodori, Jari J. E. Kajava, Celia Sánchez-Fernández, Andrea Sanna, Mason Ng and Juri Poutanen A&A, 695 (2025) A44 Published online: 03 March 2025 DOI: 10.1051/0004-6361/202452243