An XMM-Newton Study of the Coronae of ${\sigma }^2$ Coronae Borealis

J. A. Suh, M. Audard, M. Guedel +1

(Abridged) We present results of XMM-Newton observations of the RS CVn binary ${\sigma }^2$ Coronae Borealis. The RGS and EPIC MOS2 spectra were simultaneously fitted with collisional ioni…