NONTHERMAL ACCELERATION FROM RECONNECTION SHOCKS

Reconnection shocks in a magnetically dominated plasma must be compres sive. Nonthermal ion acceleration can occur across built-in slow shock s and across outflow fast shocks when the outflow is supermagnetic and the field is line yield. Electron acceleration may be initiated by in jection from the dissipation region. Reconnection and shock accelerati on thus cooperate and nonthermal acceleration should be a characterist ic feature.