Plasma source and loss at comet 67P during the Rosetta mission K. L. Heritier, M. Galand, P. Henri, F. L. Johansson, A. Beth, A. I. Eriksson, X. Vallières, K. Altwegg, J. L. Burch, C. Carr et al. (3 more) A&A, 618 (2018) A77 Published online: 12 October 2018 DOI: 10.1051/0004-6361/201832881