Measuring the Cosmic-Ray Acceleration Efficiency of a Supernova Remnant
Measuring the Cosmic-Ray Acceleration Efficiency of a Supernova Remnant
Cosmic rays are the most energetic particles arriving at earth. Although most of them are thought to be accelerated by supernova remnants, the details of the acceleration process and its efficiency are not well determined. Here we show that the pressure induced by cosmic rays exceeds the thermal pressure behind …