High-resolution international LOFAR observations of 4C 43.15 - Spectral ages and injection indices in a high-z radio galaxyF. Sweijen, L. K. Morabito, J. Harwood, R. J. van Weeren, H. J. A. Röttgering, J. R. Callingham, N. Jackson, G. Miley and J. MoldonA&A, 658 (2022) A3DOI: https://doi.org/10.1051/0004-6361/202039871