  Electron heating/acceleration in the foreshock, by which electrons may be
energized beyond thermal energies prior to encountering the bow shock, is very
important for the bow shock dynamics. And then these electrons would be more
easily injected into a process like diffusive shock acceleration. Many
mechanisms have been proposed to explain electrons heating/acceleration in the
foreshock. Magnetic reconnection is one possible candidate. Taking advantage of
the Magnetospheric Multiscale mission, we present two magnetic reconnection
events in the dawn-side and dusk-side ion foreshock region, respectively.
Super-Alfv\'enic electron outflow, demagnetization of the electrons and the
ions, and crescent electron distributions in the plane perpendicular to the
magnetic field are observed in the sub-ion-scale current sheets. Moreover,
strong energy conversion from the fields to the plasmas and significant
electron temperature enhancement are observed. Our observations provide direct
evidence that magnetic reconnection could occur in the foreshock region and
heat/accelerate the electrons therein.
