Numerical simulation of the electron capture process in a magnetar interior

摘要

In a superhigh magnetic field, direct Urca reactions can proceed for an arbitrary proton concentration. Since only the electrons with high energy E (E>Q, Q is the threshold energy of inverse β-decay) at large Landau levels can be captured, we introduce the Landau level effect coefficient q and the effective electron capture rate Γ_(eff). By using Γ_(eff), the values of L_X and L_ν are calculated, where L_X and L_ν are the average neutrino luminosity of AXPs and the average X-ray luminosity of AXPs L_X, respectively. The complete process of electron capture inside a magnetar is simulated numerically.