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We consider the one-dimensional equilibrium problem of a shear-flow boundarylayer within an "extended Hall-MHD" (eHMHD) model of plasma that retainsfirst-order finite Larmor radius (FLR) corrections to the ion dynamics. Weprovide a generalized version of the analytic expressions for the equilibriumconfiguration given in Cerri et al. (2013) [Cerri et al., Phys. Plasmas 20,112112 (2013)], highlighting their intrinsic asymmetry due to the relativeorientation of the magnetic field $\mathbf{b}=\mathbf{B}/|\mathbf{B}|$ and thefluid vorticity $\mathbf{\omega}=\mathbf{\nabla}\times\mathbf{u}$("$\mathbf{\omega b}$ asymmetry"). Finally, we show that FLR effects can modifythe Chapman--Ferraro current layer at the flank magnetopause in a way that isconsistent with the observed structure reported by Haaland et al. (2014)[Haaland et al., J. Geophys. Res. Space Phys. 119, 9019-9037 (2014)]. Inparticular, we are able to qualitatively reproduce the following key features:(i) the dusk-dawn asymmetry of the current layer, (ii) a double-peak feature inthe current profiles, and (iii) adjacent current sheets having thicknesses ofseveral ion Larmor radii and with different current directions.

Finite-Larmor-radius equilibrium and currents of the Earth's flank magnetopause