“…Sympathetic flares have been extensively reported and investigated in the past decades (e.g. Hanaoka, 1996;Lang & Willson, 1989;Masson et al, 2009;Wang & Liu, 2012;Deng et al, 2013;Sun et al, 2013;Yang et al, 2014;Liu et al, 2015a). The possible agents of energy transported from the source region of energy release to the remote footpoints are nonthermal electrons (Tang & Moore, 1982;Nakajima et al, 1985;Martin & Svestka, 1988), thermal conduction front (Rust et al, 1985;Bastian & Gary , 1992), shock waves (Machado et al , 1988), and reconnection outflows (Hanaoka, 1996;Nishio et al, 1997).…”