Extragalactic peaked-spectrum radio sources at low frequencies are young radio galaxies M. M. Slob, J. R. Callingham, H. J. A. Röttgering, W. L. Williams, K. J. Duncan, F. de Gasperin, M. J. Hardcastle and G. K. Miley A&A, 668 (2022) A186 Published online: 20 December 2022 DOI: 10.1051/0004-6361/202244651