Multi-spacecraft observations of the decay phase of solar energetic particle events R. A. Hyndman, S. Dalla, T. Laitinen, A. Hutchinson, C. M. S. Cohen and R. F. Wimmer-Schweingruber A&A, 694 (2025) A242 Published online: 18 February 2025 DOI: 10.1051/0004-6361/202453012