Radio study of the colliding-wind binary HD 93129A near periastron and its surroundings P. Benaglia, S. del Palacio, J. Saponara, A. B. Blanco, M. De Becker and B. Marcote A&A, 698 (2025) A23 Published online: 26 May 2025 DOI: 10.1051/0004-6361/202453422