Unexpected frequency of horizontal oscillations of magnetic structures in the solar photosphere M. Berretti, M. Stangalini, G. Verth, S. Jafarzadeh, D. B. Jess, F. Berrilli, S. D. T. Grant, T. Duckenfield and V. Fedun A&A, 687 (2024) L21 Published online: 22 July 2024 DOI: 10.1051/0004-6361/202450693