Magnetic field topology of the cool, active, short-period binary system σ2 Coronae BorealisL. Rosén, O. Kochukhov, E. Alecian, C. Neiner, J. Morin, G. A. Wade and the BinaMIcS collaborationA&A, 613 (2018) A60DOI: https://doi.org/10.1051/0004-6361/201731706