Proton Acceleration near an X‐Type Magnetic Reconnection Region

Abstract

We investigate the behavior of protons near an X-type magnetic reconnection region by numerical simulations. The magnetic eld is taken to be hyperbolic and time stationary with a uniform electric eld perpendicular to the magnetic eld. We also study the e ects of the magnetic eld along the uniform electric eld. We found from many parametric runs that the energy spectrum of accelerated protons near an X-type magnetic reconnection region is universal with a power-law spectrum E~c, where the powerlaw index c is about 2.02.2. The acceleration time of protons with the energy range of 120 MeV is very rapid and within which is much less than 1 s for solar are plasmas. We compare our results D102u ci ~1, with some observations of solar ares.