Electric field measurements at the plasma frequency around comet 67P by RPC-MIP on board Rosetta M. Myllys, P. Henri, X. Vallières, N. Gilet, H. Nilsson, E. Palmerio, L. Turc, A. Wellbrock, R. Goldstein and O. Witasse A&A, 652 (2021) A73 Published online: 12 August 2021 DOI: 10.1051/0004-6361/201936633