High-energy environment of super-Earth 55 Cancri e - I. Far-UV chromospheric variability as a possible tracer of planet-induced coronal rainV. Bourrier, D. Ehrenreich, A. Lecavelier des Etangs, T. Louden, P. J. Wheatley, A. Wyttenbach, A. Vidal-Madjar, B. Lavie, F. Pepe and S. UdryA&A, 615 (2018) A117DOI: https://doi.org/10.1051/0004-6361/201832700