Persistent preburst radiation varied with the age of the magnetar corresponding to the luminosity of the magnetar wind L_w for M_c = 1 M_⊙ (the left panel) and 10 M_⊙ (the right panel). Similar to Fig. 5, the colored region means νL_ν > L_c, and differently colored lines show different mechanisms. The solid lines show the peak luminosity for P_orb = 1 d, while the dashed lines show that for P_orb = 10 d.