Comparing extragalactic megahertz-peaked spectrum and gigahertz-peaked spectrum sources F. J. Ballieux, J. R. Callingham, H. J. A. Röttgering and M. M. Slob A&A, 689 (2024) A264 Published online: 19 September 2024 DOI: 10.1051/0004-6361/202449675