Numerical simulations of magnetic reconnection triggered by a supernova

Strong thermal X-ray emission is observed along Galactic ridge (Galactic Ri dge X-ray Emission, GRXE, Koyama et al. 1989). Origin of hot component is n ot known, while cool one is made of supernovae(Kaneda et al. 1997). We prop ose a possible mechanism to explain the origin(Tanuma et al. 1999). We solv ed two-dimensional resistive magnetohydrodynamics equations numerically to examine the magnetic reconnection triggered by a supernova. The magnetic re connection heats X-ray plasma in Galactic plane if it occurs in locally str ong magnetic fields of 30 mu G Heated plasma is confined by magnetic fields .